diff options
| author | Ondrej Jirman <megous@megous.com> | 2019-04-13 19:54:13 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-04-23 13:31:42 +0300 |
| commit | cc62383fcebe7f03c274462790fd912f4346304b (patch) | |
| tree | 4c240ae16567212ec6d50baac257bba55c0e5da7 /drivers/pinctrl/sunxi/pinctrl-sunxi.h | |
| parent | f7275345728a0ff18a0607dd3706f2ca25dc53e0 (diff) | |
| download | linux-cc62383fcebe7f03c274462790fd912f4346304b.tar.xz | |
pinctrl: sunxi: Support I/O bias voltage setting on H6
H6 SoC has a "pio group withstand voltage mode" register (datasheet
description), that needs to be used to select either 1.8V or 3.3V I/O mode,
based on what voltage is powering the respective pin banks and is thus used
for I/O signals.
Add support for configuring this register according to the voltage of the
pin bank regulator (if enabled).
This is similar to the support for I/O bias voltage setting patch for A80
and the same concerns apply. See:
commit 402bfb3c1352 ("Support I/O bias voltage setting on A80")
Signed-off-by: Ondrej Jirman <megous@megous.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/sunxi/pinctrl-sunxi.h')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sunxi.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h index a62b81357136..44e30deeee38 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h @@ -95,6 +95,8 @@ #define PINCTRL_SUN7I_A20 BIT(7) #define PINCTRL_SUN8I_R40 BIT(8) +#define PIO_POW_MOD_SEL_REG 0x340 + enum sunxi_desc_bias_voltage { BIAS_VOLTAGE_NONE, /* @@ -102,6 +104,11 @@ enum sunxi_desc_bias_voltage { * Pn_GRP_CONFIG registers, as seen on A80 SoC. */ BIAS_VOLTAGE_GRP_CONFIG, + /* + * Bias voltage is set through PIO_POW_MOD_SEL_REG + * register, as seen on H6 SoC, for example. + */ + BIAS_VOLTAGE_PIO_POW_MODE_SEL, }; struct sunxi_desc_function { |