[6.1.y-cip,63/85] pinctrl: renesas: rzg2l: Fix PFC_MASK for RZ/V2H and RZ/G3E

Commit Message

Tommaso Merciai March 12, 2025, 11:22 a.m. UTC

From: Lad Prabhakar <[e-mail]>

commit accabfaae0940f9427c782bfee7340ce4c15151c upstream.

The PFC_MASK value for the PFC_mx registers is currently hardcoded to
0x07, which is correct for SoCs in the RZ/G2L family, but insufficient
for RZ/V2H and RZ/G3E, where the mask value should be 0x0f.  This
discrepancy causes incorrect PFC register configuration on RZ/V2H and
RZ/G3E SoCs.

On RZ/G2L, the PFC_mx bitfields are also 4 bits wide, with bit 4 marked
as reserved.  The reserved bits are documented to read as zero and be
ignored when written.  Updating the PFC_MASK definition from 0x07 to
0x0f ensures compatibility with both SoC families while maintaining
correct behavior on RZ/G2L.

Fixes: 9bd95ac86e70 ("pinctrl: renesas: rzg2l: Add support for RZ/V2H SoC")
Cc: [e-mail]
Reported-by: Hien Huynh <[e-mail]>
Signed-off-by: Lad Prabhakar <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Link: https://lore.kernel.org/[e-mail]
Signed-off-by: Geert Uytterhoeven <[e-mail]>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 36ef1b558ae3..6e5715328682 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -158,7 +158,7 @@ 
 #define PWPR_REGWE_B		BIT(5)	/* OEN Register Write Enable, known only in RZ/V2H(P) */
 
 #define PM_MASK			0x03
-#define PFC_MASK		0x07
+#define PFC_MASK		0x0f
 #define IEN_MASK		0x01
 #define IOLH_MASK		0x03
 #define SR_MASK			0x01