diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2022-04-22 09:29:31 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2022-05-03 09:58:25 +0200 |
| commit | 8bdd369dba7ff2f89cfd723ca3a26602aae4e498 (patch) | |
| tree | ea584d4fe9dca3e8b1fd76db1abc277d9de06c3f /drivers/pinctrl | |
| parent | 4288caed9a6319b766dc0adf605c7b401180db34 (diff) | |
pinctrl: renesas: r8a779f0: Fix GPIO function on I2C-capable pins
Unlike on R-Car Gen3 SoCs, setting a bit to zero in a GPIO / Peripheral
Function Select Register (GPSRn) on R-Car S4-8 is not always sufficient
to configure a pin for GPIO. For I2C-capable pins, the I2C function
must also be explicitly disabled in the corresponding Module Select
Register (MODSELn).
Add the missing FN_SEL_I2Ci_0 function enums to the pinmux_data[] array
by temporarily overriding the GP_1_j_FN function enum to expand to two
enums: the original GP_1_j_FN enum to configure the GPSR register bits,
and the missing FN_SEL_I2Ci_0 enum to configure the MODSEL register
bits.
Fixes: 030ac6d7eeff81e3 ("pinctrl: renesas: Initial R8A779F0 PFC support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/c12c60ec1058140a37f03650043ab73f730f104f.1650610471.git.geert+renesas@glider.be
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/renesas/pfc-r8a779f0.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pinctrl/renesas/pfc-r8a779f0.c b/drivers/pinctrl/renesas/pfc-r8a779f0.c index 91860608242c..3b4ca9622bbe 100644 --- a/drivers/pinctrl/renesas/pfc-r8a779f0.c +++ b/drivers/pinctrl/renesas/pfc-r8a779f0.c @@ -257,7 +257,28 @@ enum { }; static const u16 pinmux_data[] = { +/* Using GP_1_[0-9] requires disabling I2C in MOD_SEL1 */ +#define GP_1_0_FN GP_1_0_FN, FN_SEL_I2C0_0 +#define GP_1_1_FN GP_1_1_FN, FN_SEL_I2C0_0 +#define GP_1_2_FN GP_1_2_FN, FN_SEL_I2C1_0 +#define GP_1_3_FN GP_1_3_FN, FN_SEL_I2C1_0 +#define GP_1_4_FN GP_1_4_FN, FN_SEL_I2C2_0 +#define GP_1_5_FN GP_1_5_FN, FN_SEL_I2C2_0 +#define GP_1_6_FN GP_1_6_FN, FN_SEL_I2C3_0 +#define GP_1_7_FN GP_1_7_FN, FN_SEL_I2C3_0 +#define GP_1_8_FN GP_1_8_FN, FN_SEL_I2C4_0 +#define GP_1_9_FN GP_1_9_FN, FN_SEL_I2C4_0 PINMUX_DATA_GP_ALL(), +#undef GP_1_0_FN +#undef GP_1_1_FN +#undef GP_1_2_FN +#undef GP_1_3_FN +#undef GP_1_4_FN +#undef GP_1_5_FN +#undef GP_1_6_FN +#undef GP_1_7_FN +#undef GP_1_8_FN +#undef GP_1_9_FN PINMUX_SINGLE(SD_WP), PINMUX_SINGLE(SD_CD), |