user/sven/linux.git/drivers/pmdomain/mediatek, branch master

pmdomain: mediatek: Add power domain driver for MT8189 SoC

2026-04-01T11:07:31Z

Introduce a new power domain (pmd) driver for the MediaTek mt8189 SoC. This driver ports and refines the power domain framework, dividing hardware blocks (CPU, GPU, peripherals, etc.) into independent power domains for precise and energy-efficient power management. Signed-off-by: Irving-CH Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Matthias Brugger Signed-off-by: Ulf Hansson

pmdomain: mediatek: Add bus protect control flow for MT8189

2026-04-01T11:07:31Z

In MT8189 mminfra power domain, the bus protect policy separates into two parts, one is set before subsys clocks enabled, and another need to enable after subsys clocks enable. Signed-off-by: Irving-CH Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Matthias Brugger Signed-off-by: Ulf Hansson

pmdomain: mediatek: scpsys: Add MT7622 Audio power domain to legacy driver

2026-04-01T11:07:31Z

Add the Audio power domain of the MT7622 SoC to the legacy mtk-scpsys driver (as this legacy SoC is supported only there). Signed-off-by: AngeloGioacchino Del Regno Signed-off-by: Ulf Hansson

pmdomain: mediatek: Simplify with scoped for each OF child loop

2026-04-01T11:07:31Z

Use scoped for-each loop when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Ulf Hansson

pmdomain: mediatek: mtk-mfg: Expose shader_present as nvmem cell

2026-04-01T11:07:31Z

Implement nvmem-provider functionality in mtk-mfg-pmdomain, such that it can expose its GF_REG_SHADER_PRESENT value in the shared memory as an nvmem cell for panthor. Signed-off-by: Nicolas Frattaroli Signed-off-by: Ulf Hansson

pmdomain: mediatek: Fix power domain count

2026-03-12T13:51:52Z

The wrong value of the number of domains is wrong which leads to failures when trying to enumerate nested power domains. PM: genpd_xlate_onecell: invalid domain index 0 PM: genpd_xlate_onecell: invalid domain index 1 PM: genpd_xlate_onecell: invalid domain index 3 PM: genpd_xlate_onecell: invalid domain index 4 PM: genpd_xlate_onecell: invalid domain index 5 PM: genpd_xlate_onecell: invalid domain index 13 PM: genpd_xlate_onecell: invalid domain index 14 Attempts to use these power domains fail, so fix this by using the correct value of calculated power domains. Signed-off-by: Adam Ford Fixes: 88914db077b6 ("pmdomain: mediatek: Add support for Hardware Voter power domains") Reviewed-by: AngeloGioacchino Del Regno Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson

pmdomain: mtk-pm-domains: Fix spinlock recursion fix in probe

2025-12-29T10:41:09Z

Remove scpsys_get_legacy_regmap(), replacing its usage with of_find_node_with_property(). Explicitly call of_node_get(np) before each of_find_node_with_property() to maintain correct node reference counting. The of_find_node_with_property() function "consumes" its input by calling of_node_put() internally, whether or not it finds a match. Currently, dev->of_node (np) is passed multiple times in sequence without incrementing its reference count, causing it to be decremented multiple times and risking early memory release. Adding of_node_get(np) before each call balances the reference count, preventing premature node release. Fixes: c1bac49fe91f ("pmdomains: mtk-pm-domains: Fix spinlock recursion in probe") Cc: stable@vger.kernel.org Signed-off-by: Macpaul Lin Tested-by: Louis-Alexis Eyraud Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2025-11-24T10:14:36Z

Merge the pmdomain fixes for v6.18-rc[n] into the next branch, to allow them to get tested together with the new changes that are targeted for v6.19. Signed-off-by: Ulf Hansson

pmdomains: mtk-pm-domains: Fix spinlock recursion in probe

2025-11-24T10:04:17Z

For some reason, of_find_node_with_property() is creating a spinlock recursion issue along with fwnode_count_parents(), and this issue is making all MediaTek boards unbootable. As of kernel v6.18-rc6, there are only three users of this function, one of which is this driver. Migrate away from of_find_node_with_property() by adding a local scpsys_get_legacy_regmap_node() function, which acts similarly to of_find_node_with_property(), and calling the former in place of the latter. This resolves the following spinlock recursion issue: [ 1.773979] BUG: spinlock recursion on CPU#2, kworker/u24:1/60 [ 1.790485] lock: devtree_lock+0x0/0x40, .magic: dead4ead, .owner: kworker/u24:1/60, .owner_cpu: 2 [ 1.791644] CPU: 2 UID: 0 PID: 60 Comm: kworker/u24:1 Tainted: G W 6.18.0-rc6 #3 PREEMPT [ 1.791649] Tainted: [W]=WARN [ 1.791650] Hardware name: MediaTek Genio-510 EVK (DT) [ 1.791653] Workqueue: events_unbound deferred_probe_work_func [ 1.791658] Call trace: [ 1.791659] show_stack+0x18/0x30 (C) [ 1.791664] dump_stack_lvl+0x68/0x94 [ 1.791668] dump_stack+0x18/0x24 [ 1.791672] spin_dump+0x78/0x88 [ 1.791678] do_raw_spin_lock+0x110/0x140 [ 1.791684] _raw_spin_lock_irqsave+0x58/0x6c [ 1.791690] of_get_parent+0x28/0x74 [ 1.791694] of_fwnode_get_parent+0x38/0x7c [ 1.791700] fwnode_count_parents+0x34/0xf0 [ 1.791705] fwnode_full_name_string+0x28/0x120 [ 1.791710] device_node_string+0x3e4/0x50c [ 1.791715] pointer+0x294/0x430 [ 1.791718] vsnprintf+0x21c/0x5bc [ 1.791722] vprintk_store+0x108/0x47c [ 1.791728] vprintk_emit+0xc4/0x350 [ 1.791732] vprintk_default+0x34/0x40 [ 1.791736] vprintk+0x24/0x30 [ 1.791740] _printk+0x60/0x8c [ 1.791744] of_node_release+0x154/0x194 [ 1.791749] kobject_put+0xa0/0x120 [ 1.791753] of_node_put+0x18/0x28 [ 1.791756] of_find_node_with_property+0x74/0x100 [ 1.791761] scpsys_probe+0x338/0x5e0 [ 1.791765] platform_probe+0x5c/0xa4 [ 1.791770] really_probe+0xbc/0x2ac [ 1.791774] __driver_probe_device+0x78/0x118 [ 1.791779] driver_probe_device+0x3c/0x170 [ 1.791783] __device_attach_driver+0xb8/0x150 [ 1.791788] bus_for_each_drv+0x88/0xe8 [ 1.791792] __device_attach+0x9c/0x1a0 [ 1.791796] device_initial_probe+0x14/0x20 [ 1.791801] bus_probe_device+0xa0/0xa4 [ 1.791805] deferred_probe_work_func+0x88/0xd0 [ 1.791809] process_one_work+0x1e8/0x448 [ 1.791813] worker_thread+0x1ac/0x340 [ 1.791816] kthread+0x138/0x220 [ 1.791821] ret_from_fork+0x10/0x20 Fixes: c29345fa5f66 ("pmdomain: mediatek: Refactor bus protection regmaps retrieval") Signed-off-by: AngeloGioacchino Del Regno Tested-by: Louis-Alexis Eyraud Tested-by: Macpaul Lin Reviewed-by: Macpaul Lin Signed-off-by: Ulf Hansson

pmdomain: mediatek: convert from clk round_rate() to determine_rate()

2025-11-19T17:06:50Z

The round_rate() clk ops is deprecated in the clk framework in favor of the determine_rate() clk ops, so let's convert this driver so that round_rate() can be removed from the clk core. Signed-off-by: Brian Masney Reviewed-by: Nicolas Frattaroli Signed-off-by: Ulf Hansson