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authorBastien Curutchet (Schneider Electric) <bastien.curutchet@bootlin.com>2026-01-05 14:08:05 +0100
committerPaolo Abeni <pabeni@redhat.com>2026-01-08 13:01:16 +0100
commit5b1fe74facc2abab66cee1d18a74807f457983ff (patch)
tree8a74c8c4b97521bbdbd842227913c4af0da29c95
parent776ad30de04e26b705ce2c36d7efe99aa6f12d6f (diff)
net: dsa: microchip: Use regs[] to access REG_PTP_RTC_SUB_NANOSEC
Accesses to the PTP_RTC_SUB_NANOSEC register are done through a hardcoded address which doesn't match with the KSZ8463's register layout. Add a new entry for the PTP_RTC_SUB_NANOSEC register in the regs[] tables. Use the regs[] table to retrieve the PTP_RTC_SUB_NANOSEC register address when accessing it. Remove the macro defining the address to prevent further use. Signed-off-by: Bastien Curutchet (Schneider Electric) <bastien.curutchet@bootlin.com> Link: https://patch.msgid.link/20260105-ksz-rework-v1-6-a68df7f57375@bootlin.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-rw-r--r--drivers/net/dsa/microchip/ksz_common.c2
-rw-r--r--drivers/net/dsa/microchip/ksz_common.h1
-rw-r--r--drivers/net/dsa/microchip/ksz_ptp.c4
-rw-r--r--drivers/net/dsa/microchip/ksz_ptp_reg.h3
4 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 595438031d31..7af008cafccf 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -572,6 +572,7 @@ static const u16 ksz8463_regs[] = {
[PTP_CLK_CTRL] = 0x0600,
[PTP_RTC_NANOSEC] = 0x0604,
[PTP_RTC_SEC] = 0x0608,
+ [PTP_RTC_SUB_NANOSEC] = 0x060C,
};
static const u32 ksz8463_masks[] = {
@@ -807,6 +808,7 @@ static const u16 ksz9477_regs[] = {
[REG_PORT_PME_STATUS] = 0x0013,
[REG_PORT_PME_CTRL] = 0x0017,
[PTP_CLK_CTRL] = 0x0500,
+ [PTP_RTC_SUB_NANOSEC] = 0x0502,
[PTP_RTC_NANOSEC] = 0x0504,
[PTP_RTC_SEC] = 0x0508,
};
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index b4305bd47fbe..d1baa3ce09b5 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -274,6 +274,7 @@ enum ksz_regs {
PTP_CLK_CTRL,
PTP_RTC_NANOSEC,
PTP_RTC_SEC,
+ PTP_RTC_SUB_NANOSEC,
};
enum ksz_masks {
diff --git a/drivers/net/dsa/microchip/ksz_ptp.c b/drivers/net/dsa/microchip/ksz_ptp.c
index 5a94beb410df..3766d8bde478 100644
--- a/drivers/net/dsa/microchip/ksz_ptp.c
+++ b/drivers/net/dsa/microchip/ksz_ptp.c
@@ -596,7 +596,7 @@ static int _ksz_ptp_gettime(struct ksz_device *dev, struct timespec64 *ts)
if (ret)
return ret;
- ret = ksz_read8(dev, REG_PTP_RTC_SUB_NANOSEC__2, &phase);
+ ret = ksz_read8(dev, regs[PTP_RTC_SUB_NANOSEC], &phase);
if (ret)
return ret;
@@ -683,7 +683,7 @@ static int ksz_ptp_settime(struct ptp_clock_info *ptp,
mutex_lock(&ptp_data->lock);
/* Write to shadow registers and Load PTP clock */
- ret = ksz_write16(dev, REG_PTP_RTC_SUB_NANOSEC__2, PTP_RTC_0NS);
+ ret = ksz_write16(dev, regs[PTP_RTC_SUB_NANOSEC], PTP_RTC_0NS);
if (ret)
goto unlock;
diff --git a/drivers/net/dsa/microchip/ksz_ptp_reg.h b/drivers/net/dsa/microchip/ksz_ptp_reg.h
index d1d315144886..41891ddadaa3 100644
--- a/drivers/net/dsa/microchip/ksz_ptp_reg.h
+++ b/drivers/net/dsa/microchip/ksz_ptp_reg.h
@@ -24,8 +24,7 @@
#define PTP_CLK_ENABLE BIT(1)
#define PTP_CLK_RESET BIT(0)
-#define REG_PTP_RTC_SUB_NANOSEC__2 0x0502
-
+/* REG_PTP_RTC_SUB_NANOSEC */
#define PTP_RTC_SUB_NANOSEC_M 0x0007
#define PTP_RTC_0NS 0x00