[PATCH] pinctrl: rockchip: fix reading pull type on rk3568

[jay.xu at rock-chips.com]

Hi Heiko:

--------------
jay.xu at rock-chips.com
>Hi Jay,
>
>Am Mittwoch, 11. Januar 2023, 11:26:18 CET schrieb jay.xu at rock-chips.com:
>> Hi Jonas
>>
>> --------------
>> jay.xu at rock-chips.com
>> >When reading pinconf-pins from debugfs it fails to get the configured pull
>> >type on RK3568, "unsupported pinctrl type" error messages is also reported.
>> >
>> >Fix this by adding support for RK3568 in rockchip_get_pull, including a
>> >reverse of the pull-up value swap applied in rockchip_set_pull so that
>> >pull-up is correctly reported in pinconf-pins.
>> >Also update the workaround comment to reflect affected pins, GPIO0_D3-D6.
>> >
>> >Fixes: c0dadc0e47a8 ("pinctrl: rockchip: add support for rk3568")
>> >Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
>> >---
>>
>> Signed-off-by: Jianqun Xu <jay.xu at rock-chips.com>
>
>Did you want one of
>
>- Reviewed-by:
>- Tested-by:
>- Acked-by:
>
>instead? 
thanks, 

Reviewed-by: Jianqun Xu <jay.xu at rock-chips.com>
>
>
>Heiko
>
>> > drivers/pinctrl/pinctrl-rockchip.c | 11 ++++++++++-
>> > 1 file changed, 10 insertions(+), 1 deletion(-)
>> >
>> >diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
>> >index 849d5fa2a362..5eeac92f610a 100644
>> >--- a/drivers/pinctrl/pinctrl-rockchip.c
>> >+++ b/drivers/pinctrl/pinctrl-rockchip.c
>> >@@ -2436,10 +2436,19 @@ static int rockchip_get_pull(struct rockchip_pin_bank *bank, int pin_num)
>> > case RK3308:
>> > case RK3368:
>> > case RK3399:
>> >+	case RK3568:
>> > case RK3588:
>> > pull_type = bank->pull_type[pin_num / 8];
>> > data >>= bit;
>> > data &= (1 << RK3188_PULL_BITS_PER_PIN) - 1;
>> >+	/*
>> >+	* In the TRM, pull-up being 1 for everything except the GPIO0_D3-D6,
>> >+	* where that pull up value becomes 3.
>> >+	*/
>> >+	if (ctrl->type == RK3568 && bank->bank_num == 0 && pin_num >= 27 && pin_num <= 30) {
>> >+	if (data == 3)
>> >+	data = 1;
>> >+	}
>> >
>> > return rockchip_pull_list[pull_type][data];
>> > default:
>> >@@ -2497,7 +2506,7 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank,
>> > }
>> > }
>> > /*
>> >-	* In the TRM, pull-up being 1 for everything except the GPIO0_D0-D6,
>> >+	* In the TRM, pull-up being 1 for everything except the GPIO0_D3-D6,
>> > * where that pull up value becomes 3.
>> > */
>> > if (ctrl->type == RK3568 && bank->bank_num == 0 && pin_num >= 27 && pin_num <= 30) {
>> >--
>> >2.39.0
>> >
>>
>
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