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path: root/drivers/clk/renesas
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7 daysConvert 'alloc_flex' family to use the new default GFP_KERNEL argumentLinus Torvalds
This is the exact same thing as the 'alloc_obj()' version, only much smaller because there are a lot fewer users of the *alloc_flex() interface. As with alloc_obj() version, this was done entirely with mindless brute force, using the same script, except using 'flex' in the pattern rather than 'objs*'. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 daysConvert 'alloc_obj' family to use the new default GFP_KERNEL argumentLinus Torvalds
This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 daystreewide: Replace kmalloc with kmalloc_obj for non-scalar typesKees Cook
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org>
2026-01-16clk: renesas: Add missing log message terminatorsGeert Uytterhoeven
Complete printed messages should be terminated by newline characters. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Brian Masney <bmasney@redhat.com> Link: https://patch.msgid.link/cd0b3624066b80ed0bb00d489c99e2c1a06d755f.1768480559.git.geert+renesas@glider.be
2026-01-16clk: renesas: rzg2l: Remove DSI clock rate restrictionsChris Brandt
Convert the limited MIPI clock calculations to a full range of settings based on math including H/W limitation validation. Since the required DSI division setting must be specified from external sources before calculations, expose a new API to set it. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Tested-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Tested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251124131003.992554-2-chris.brandt@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: rzv2h: Deassert reset on assert timeoutBiju Das
If the assert() fails due to timeout error, set the reset register bit back to deasserted state. This change is needed especially for handling assert error in suspend() callback that expect the device to be in operational state in case of failure. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20260108123433.104464-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: rzg2l: Deassert reset on assert timeoutBiju Das
If the assert() fails due to timeout error, set the reset register bit back to deasserted state. This change is needed especially for handling assert error in suspend() callback that expect the device to be in operational state in case of failure. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20260108123433.104464-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: cpg-mssr: Unlock before reset verificationLad Prabhakar
Move spin_unlock_irqrestore() before verifying the reset result and printing errors. The verification condition only uses local variables and does not require locking. Reported-by: Pavel Machek <pavel@nabladev.com> Closes: https://lore.kernel.org/all/aVujAQJSDn6WyORK@duo.ucw.cz/ Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20260105140625.2590685-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: r9a09g056: Add entries for CANFDLad Prabhakar
Add clock and reset entries for the CANFD IP. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251224165049.3384870-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: r9a09g057: Add entries for CANFDLad Prabhakar
Add clock and reset entries for the CANFD IP. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251224165049.3384870-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: r9a09g077: Add CANFD clocksLad Prabhakar
The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have a CANFD peripheral which has three input clocks PCLKM (peripheral clock), PCLKH (RAM clock) and PCLKCAN (CANFD clock). Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251224165049.3384870-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-09clk: renesas: cpg-mssr: Handle RZ/T2H register layout in PM callbacksCosmin Tanislav
The register layout for RZ/T2H is not handled inside cpg_mssr_suspend_noirq() and cpg_mssr_resume_noirq(), causing a memory abort because the wrong code path is taken, as shown below. Explicitly handle the RZ/T2H register layout in cpg_mssr_suspend_noirq() and cpg_mssr_resume_noirq(), similar to how it is done inside cpg_mstp_clock_is_enabled() and cpg_mstp_clock_endisable(). [ 90.052296] Mem abort info: [ 90.055420] ESR = 0x0000000096000007 [ 90.059553] EC = 0x25: DABT (current EL), IL = 32 bits [ 90.065697] SET = 0, FnV = 0 [ 90.069211] EA = 0, S1PTW = 0 [ 90.072834] FSC = 0x07: level 3 translation fault [ 90.078109] Data abort info: [ 90.081405] ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000 [ 90.087427] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 90.093169] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 90.099008] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000c60b4000 [ 90.106756] [ffff800082816318] pgd=0000000000000000, p4d=10000000c69ef003, pud=10000000c69f0003, pmd=100000024002b403, pte=0000000000000000 [ 90.120727] Internal error: Oops: 0000000096000007 [#1] SMP [ 90.127058] Modules linked in: sha256 cfg80211 spi_nor at24 renesas_usbhs bluetooth ecdh_generic ecc rfkill rzt2h_adc spi_rzv2h_rspi industrialio_adc gpio_keys fuse drm backlight ipv6 [ 90.145201] CPU: 0 UID: 0 PID: 307 Comm: sh Not tainted 6.18.0-rc1-next-20251016+ #47 PREEMPT [ 90.155006] Hardware name: Renesas RZ/T2H EVK Board based on r9a09g077m44 (DT) [ 90.163041] pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 90.170777] pc : cpg_mssr_suspend_noirq+0x4c/0xc0 [ 90.175983] lr : device_suspend_noirq+0x6c/0x22c [ 90.181309] sp : ffff8000838d3af0 [ 90.185026] x29: ffff8000838d3af0 x28: ffff8000825c016f x27: ffff8000825c01a0 [ 90.192973] x26: ffff8000809feeec x25: ffff8000827bebb8 x24: 0000000000000002 [ 90.200815] x23: ffff8000825c0190 x22: 0000000000000002 x21: 0000000000000000 [ 90.209058] x20: ffff8000827bebb8 x19: ffff000180128010 x18: ffff00033ef92a80 [ 90.217100] x17: ffff000180051700 x16: 0000000000000001 x15: ffff000187afc310 [ 90.224847] x14: 0000000000000254 x13: 0000000000000001 x12: 0000000000000001 [ 90.232793] x11: 00000000000000c0 x10: 0000000000000ab0 x9 : ffff8000838d38b0 [ 90.240540] x8 : ffff000186387410 x7 : 0000000000000001 x6 : 0000000000000000 [ 90.248600] x5 : ffff0001803240d4 x4 : 0000000000000003 x3 : ffff0001803240d0 [ 90.256460] x2 : ffff800082816318 x1 : 000000000000000c x0 : ffff000180324000 [ 90.264208] Call trace: [ 90.267019] cpg_mssr_suspend_noirq+0x4c/0xc0 (P) [ 90.272450] device_suspend_noirq+0x6c/0x22c [ 90.277375] dpm_noirq_suspend_devices+0x1a8/0x2a0 [ 90.282902] dpm_suspend_noirq+0x24/0xa0 [ 90.287428] suspend_devices_and_enter+0x310/0x590 [ 90.292790] pm_suspend+0x1b4/0x200 [ 90.296811] state_store+0x80/0xf4 [ 90.300676] kobj_attr_store+0x18/0x34 [ 90.305002] sysfs_kf_write+0x7c/0x94 [ 90.309232] kernfs_fop_write_iter+0x12c/0x200 [ 90.314115] vfs_write+0x240/0x380 [ 90.318041] ksys_write+0x64/0x100 [ 90.321862] __arm64_sys_write+0x18/0x24 [ 90.326013] invoke_syscall.constprop.0+0x40/0xf0 [ 90.331445] el0_svc_common.constprop.0+0xb8/0xd8 [ 90.336554] do_el0_svc+0x1c/0x28 [ 90.340375] el0_svc+0x34/0xe8 [ 90.343900] el0t_64_sync_handler+0xa0/0xe4 [ 90.348426] el0t_64_sync+0x198/0x19c [ 90.352609] Code: 8b040042 b9409004 7100049f 54000240 (b9400042) [ 90.359639] ---[ end trace 0000000000000000 ]--- Fixes: 065fe720eec6 ("clk: renesas: Add support for R9A09G077 SoC") Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251127145654.3253992-3-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2026-01-08clk: renesas: cpg-mssr: Simplify pointer math in cpg_rzt2h_mstp_read()Cosmin Tanislav
Private state is available in all places where cpg_rzt2h_mstp_read() is called, remove the extra pointer math used to find it from clk_hw. While at it, put these statements on a single line as they do not exceed the 80 columns limit. Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251127145654.3253992-2-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-29clk: renesas: r9a09g056: Add clock and reset entries for TSUOvidiu Panait
Add module clock and reset entries for the TSU0 and TSU1 blocks on the Renesas RZ/V2N (R9A09G056) SoC. Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251209091115.8541-3-ovidiu.panait.rb@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-23clk: renesas: r9a09g057: Add entries for RSCIsLad Prabhakar
Add clock and reset entries for the RSCI IPs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251203094147.6429-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-23clk: renesas: r9a09g056: Add entries for RSCIsLad Prabhakar
Add clock and reset entries for the RSCI IPs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251203094147.6429-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: r9a09g056: Add entries for the RSPIsLad Prabhakar
Add clock and reset entries for the RSPI IPs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251125221420.288809-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: r9a09g056: Add entries for ICULad Prabhakar
Add clock and reset entries for the ICU IP block. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251125221420.288809-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: r9a09g056: Add entries for the DMACsLad Prabhakar
Add clock and reset entries for the DMAC IPs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251125221420.288809-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: r9a09g077: Propagate rate changes through mux parentsLad Prabhakar
Enable CLK_SET_RATE_PARENT for mux clocks so that rate changes can properly propagate to their parent clocks. Several clocks in the R9A09G077 CPG tree depend on upstream PLL or divider outputs being recalculated when a child requests a new frequency. Without this flag, rate adjustments stop at the mux layer, leaving parent rates unchanged and preventing the clock tree from converging on the intended values. Set the flag in DEF_MUX to ensure that parent clocks participate in rate negotiation, which is required for correct operation of the display and peripheral related clocks being added for RZ/T2H support. Fixes: 065fe720eec6e ("clk: renesas: Add support for R9A09G077 SoC") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251121090853.5220-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: r9a09g077: Add xSPI core and module clocksLad Prabhakar
Add core clocks and module clock definitions required by the xSPI (Expanded SPI) IP on the R9A09G077 SoC. Define the new SCKCR fields FSELXSPI0/FSELXSPI1 and DIVSEL_XSPI0/1 and add two new core clocks XSPI_CLK0 and XSPI_CLK1. The xSPI block uses PCLKH as its bus clock (use as module clock parent) while the operation clock (XSPI_CLKn) is derived from PLL4. To support this arrangement provide mux/div selectors and divider tables for the supported XSPI operating rates. Add CLK_TYPE_RZT2H_FSELXSPI to implement a custom divider/mux clock where the determine_rate() callback enforces the hardware constraint: when the parent output is 600MHz only dividers 8 and 16 are valid, whereas for 800MHz operation the full divider set (6,8,16,32,64) may be used. The custom determine_rate() picks the best parent/divider pair to match the requested rate and programs the appropriate SCKCR fields. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251117205627.39376-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: rzg2l: Select correct div round macroChris Brandt
Variable foutvco_rate is an unsigned long, not an unsigned long long. Cc: stable@kernel.org Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Closes: https://lore.kernel.org/CAMuHMdVf7dSeqAhtyxDCFuCheQRzwS-8996Rr2Ntui21uiBgdA@mail.gmail.com Fixes: dabf72b85f29 ("clk: renesas: rzg2l: Fix FOUTPOSTDIV clk") Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251114194529.3304361-1-chris.brandt@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-15clk: renesas: rzg2l: Fix intin variable sizeChris Brandt
INTIN is a 12-bit register value, so u8 is too small. Fixes: 1561380ee72f ("clk: renesas: rzg2l: Add FOUTPOSTDIV clk support") Cc: stable@vger.kernel.org Reported-by: Hugo Villeneuve <hugo@hugovil.com> Closes: https://lore.kernel.org/20251107113058.f334957151d1a8dd94dd740b@hugovil.com Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251114193711.3277912-1-chris.brandt@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-12-08Merge tag 'clk-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "This is entirely SoC clk drivers. The majority diff wise is for the new Rockchip and Qualcomm clk drivers which is mostly lines and lines of data structures to describe the clk hardware in these SoCs. Beyond those two, Renesas continues to incrementally add clks to their SoC drivers, causing them to show up higher in the diffstat this time because they added quite a few clks all over the place. Overall it is a semi-quiet release that has some new clk drivers and the usual fixes for clock data that was wrong or missing and non-critical cleanups that plug error paths or fix typos. New Drivers: - Qualcomm IPQ5424 Network Subsystem Clock Controller - Qualcomm SM8750 Video Clock Controller - Rockchip RV1126B and RK3506 clock drivers - i.MX8ULP SIM LPAV clock driver - Samsung ACPM (firmware interface) clock driver - Altera Agilex5 clock driver" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (117 commits) clk: keystone: fix compile testing clk: keystone: syscon-clk: fix regmap leak on probe failure clk: qcom: Mark camcc_sm7150_hws static clk: samsung: exynos-clkout: Assign .num before accessing .hws clk: rockchip: Add clock and reset driver for RK3506 dt-bindings: clock: rockchip: Add RK3506 clock and reset unit clk: actions: Fix discarding const qualifier by 'container_of' macro clk: spacemit: Set clk_hw_onecell_data::num before using flex array clk: visconti: Add VIIF clocks dt-bindings: clock: tmpv770x: Add VIIF clocks dt-bindings: clock: tmpv770x: Remove definition of number of clocks clk: visconti: Do not define number of clocks in bindings clk: rockchip: Add clock controller for the RV1126B dt-bindings: clock, reset: Add support for rv1126b clk: rockchip: Implement rockchip_clk_register_armclk_multi_pll() clk: qcom: x1e80100-dispcc: Add USB4 router link resets dt-bindings: clock: qcom: x1e80100-dispcc: Add USB4 router link resets clk: qcom: videocc-sm8750: Add video clock controller driver for SM8750 dt-bindings: clock: qcom: Add SM8750 video clock controller clk: qcom: branch: Extend invert logic for branch2 mem clocks ...
2025-11-24clk: renesas: Use bitfield helpersGeert Uytterhoeven
Use the FIELD_{GET,PREP}() and field_{get,prep}() helpers for const respective non-const bitfields, instead of open-coding the same operations. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2025-11-13clk: renesas: r9a09g077: Add SPI module clocksCosmin Tanislav
The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have four SPI peripherals, each with their own clock divider, which divides PLL4 by either 24, 25, 30 or 32, similar to the SCI peripheral. The dividers feed into the usual module clocks. Add them all. Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251105104151.1489281-2-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-13clk: renesas: r9a09g056: Add USB3.0 clocks/resetsLad Prabhakar
Add USB3.0 clock and reset entries. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251101050034.738807-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-13clk: renesas: r9a09g057: Add USB3.0 clocks/resetsLad Prabhakar
Add USB3.0 clock and reset entries. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251101050034.738807-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-13clk: renesas: r9a09g047: Add RSCI clocks/resetsBiju Das
Add RSCI clock and reset entries. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251027154615.115759-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-12clk: renesas: r9a06g032: Fix memory leak in error pathHaotian Zhang
The current code uses of_iomap() to map registers but never calls iounmap() on any error path after the mapping. This causes a memory leak when probe fails after successful ioremap, for example when of_clk_add_provider() or r9a06g032_add_clk_domain() fails. Replace of_iomap() with devm_of_iomap() to automatically unmap the region on probe failure. Update the error check accordingly to use IS_ERR() and PTR_ERR() since devm_of_iomap() returns ERR_PTR on error. Fixes: 4c3d88526eba ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251030061603.1954-1-vulab@iscas.ac.cn Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-12clk: renesas: r9a09g077: Use devm_ helpers for divider clock registrationLad Prabhakar
Convert the divider clock registration in the R9A09G077 CPG driver to use device-managed (devm_) helper functions. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251028165127.991351-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-12clk: renesas: r9a09g077: Remove stray blank lineLad Prabhakar
Remove an unnecessary blank line at the end of r9a09g077_cpg_div_clk_register() to tidy up the code. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251028165127.991351-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-12clk: renesas: r9a09g077: Propagate rate changes to parent clocksLad Prabhakar
Add the CLK_SET_RATE_PARENT flag to divider clock registration so that rate changes can propagate to parent clocks when needed. This allows the CPG divider clocks to request rate adjustments from their parent, ensuring correct frequency scaling and improved flexibility in clock rate selection. Fixes: 065fe720eec6e ("clk: renesas: Add support for R9A09G077 SoC") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251028165127.991351-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-12clk: renesas: r8a779a0: Add 3DGE module clockNiklas Söderlund
Describe the 3DGE module clock needed to operate the PowerVR GPU. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251106211604.2766465-5-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-10clk: renesas: r8a779a0: Add ZG Core clockNiklas Söderlund
Describe the ZG Core clock needed to operate the PowerVR GPU. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251106211604.2766465-4-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-11-10clk: renesas: rcar-gen4: Add support for clock dividers in FRQCRBNiklas Söderlund
The FRQCRB register on R-Car V3U, V4H and V4M do in addition to the already supported KICK bit contain settings for the frequency division ratios for the clocks ZTR, ZT, ZS and ZG. It is however not possible to use the latter when registering a Z clock with the DEF_GEN4_Z() macro. This change adds support for that by extending the existing practice of treating the bit field offsets at multiples of 32 to map to a different register. With this new mapping in palace bit offsets 0 - 31 map to FRQCRC0 bit offsets 32 - 63 map to FRQCRC1 bit offsets 64 - 95 map to FRQCRB The change also adds an error condition to return an error if an unknown offset is used. The KICK bit defined in FRQCRB and already supported covers all three registers and no addition to how it is handled are needed. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251106211604.2766465-3-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: r9a09g056: Add clock and reset entries for ISPLad Prabhakar
Add entries detailing the clocks and resets for the ISP in the RZ/V2N SoC. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251023210724.666476-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: r9a09g056: Add support for PLLVDO, CRU clocks, and resetsLad Prabhakar
Add support for the PLLVDO clock and its related CRU clocks and reset entries in the R9A09G056 CPG driver. Introduce `CLK_PLLVDO` and associated clocks like `CLK_PLLVDO_CRU0` and `CLK_PLLVDO_CRU1`, along with their corresponding dividers. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251023210724.666476-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: r9a09g056: Add clocks and resets for DSI and LCDC modulesLad Prabhakar
Add clock and reset definitions required to support the DSI and LCDC hardware blocks on the RZ/V2N SoC. This includes new core clocks, clock dividers, module clocks, and reset entries, as well as PLL and divider configurations specific to these peripherals. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251023210724.666476-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: r9a09g077: Add TSU module clockCosmin Tanislav
The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have a TSU peripheral which is controlled by a module clock. The TSU module clock is enabled in register MSTPCRD (0x30c), at bit 7, resulting in a (0x30c - 0x300) / 4 * 100 + 7 = 307 index. Add it to the list of module clocks. Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251023081925.2412325-2-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: r9a09g057: Add clock and reset entries for DSI and LCDCLad Prabhakar
Add clock and reset entries for the DSI and LCDC peripherals. Co-developed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251015192611.241920-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27Merge tag 'clk-renesas-rzv2h-plldsi-tag' into renesas-clk-for-v6.19Geert Uytterhoeven
clk: renesas: rzv2h: Add support for DSI clocks RZ/V2H Clock Pulse Generator PLLDSI API, shared by clock and MIPI DSI driver source files.
2025-10-27clk: renesas: rzv2h: Add support for DSI clocksLad Prabhakar
Add support for PLLDSI and its post-dividers in the RZ/V2H CPG driver and export helper APIs for use by the DSI driver. Introduce per-PLL-DSI state in the CPG private structure and provide a set of helper functions that find valid PLL parameter combinations for a requested frequency. The new helpers are rzv2h_get_pll_pars(), rzv2h_get_pll_div_pars(), rzv2h_get_pll_divs_pars() and rzv2h_get_pll_dtable_pars() and they are exported in the "RZV2H_CPG" namespace for use by other consumers (notably the DSI driver). These helpers perform iterative searches over PLL parameters (M, K, P, S) and optional post-dividers and return the best match (or an exact match when possible). Move PLL/CLK related limits and parameter types into the shared include (include/linux/clk/renesas.h) by adding struct rzv2h_pll_limits, struct rzv2h_pll_pars and struct rzv2h_pll_div_pars plus the RZV2H_CPG_PLL_DSI_LIMITS() helper macro to define DSI PLL limits. This change centralises the PLLDSI algorithms so the CPG and DSI drivers compute PLL parameters consistently and allows the DSI driver to accurately request rates and program its PLL. Co-developed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Acked-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251015192611.241920-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: rzv2h: Use GENMASK for PLL fieldsLad Prabhakar
Replace the older FIELD_GET-wrapping helper macros with plain GENMASK definitions for the PLL CLK1/CLK2 field masks (CPG_PLL_CLK1_KDIV, CPG_PLL_CLK1_MDIV, CPG_PLL_CLK1_PDIV and CPG_PLL_CLK2_SDIV). Update rzv2h_cpg_pll_clk_recalc_rate() to explicitly extract those fields with FIELD_GET and cast the KDIV extraction to s16 to ensure proper sign extension when computing the PLL output rate. Co-developed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Acked-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251015192611.241920-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-27clk: renesas: rzv2h: Add instance field to struct pllLad Prabhakar
Add a two-bit "instance" member to struct pll and extend the PLL_PACK() macro to accept an instance parameter. Initialize all existing PLL definitions with instance 0 to preserve legacy behavior. This change enables support for SoCs with multiple PLL instances (for example, RZ/G3E we have two PLL DSIs). Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251015192611.241920-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-23clk: renesas: r9a09g057: Add clock and reset entries for RTCOvidiu Panait
Add module clock and reset entries for the RTC module on the Renesas RZ/V2H (R9A09G057) SoC. Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251021080705.18116-2-ovidiu.panait.rb@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-23clk: renesas: cpg-mssr: Spelling s/offets/offsets/Geert Uytterhoeven
Fix a misspelling of "offsets". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/47bf5186c3a234f6a6e53d8fdc81fafd2e981534.1761033805.git.geert+renesas@glider.be
2025-10-23clk: renesas: r9a09g057: Add clock and reset entries for TSUOvidiu Panait
Add module clock and reset entries for the TSU0 and TSU1 blocks on the Renesas RZ/V2H (R9A09G057) SoC. Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251020143107.13974-2-ovidiu.panait.rb@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-23clk: renesas: cpg-mssr: Add read-back and delay handling for RZ/T2H MSTPLad Prabhakar
On the RZ/T2H SoC, a specific sequence is required when releasing a module from the module stop state (i.e. when clearing the corresponding bit in the MSTPCRm register to '0'). After writing to the MSTPCRm register, a read-back of the same register must be performed, followed by at least seven dummy reads of any register within the IP block that is being released. To avoid mapping device registers for this purpose, a short delay is introduced after the read-back to ensure proper hardware stabilization before the module becomes accessible. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20251014105348.93705-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2025-10-20clk: renesas: cpg-mssr: Add module reset support for RZ/T2HLad Prabhakar
Add support for module reset handling on the RZ/T2H SoC. Unlike earlier CPG/MSSR variants, RZ/T2H uses a unified set of Module Reset Control Registers (MRCR) where both reset and deassert actions are done via read-modify-write (RMW) to the same register. Introduce a new MRCR offset table (mrcr_for_rzt2h) for RZ/T2H and assign it to reset_regs. For this SoC, the number of resets is based on the number of MRCR registers rather than the number of module clocks. Also add cpg_mrcr_reset_ops to implement reset, assert, and deassert using RMW while holding the spinlock. This follows the RZ/T2H requirements, where processing after releasing a module reset must be secured by performing seven dummy reads of the same register, and where a module that is reset and released again must ensure the target bit in the Module Reset Control Register is set to 1. Update the reset controller registration to select cpg_mrcr_reset_ops for RZ/T2H, while keeping the existing cpg_mssr_reset_ops for other SoCs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patch.msgid.link/20250929112324.3622148-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
generated by cgit v1.2.3 (git 2.46.0) at 2026-03-01 10:57:02 +0000