linux-kernel - Re: [PATCH 1/2] pinctrl: rockchip: fix RK3308 pinmux bits

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Date:   Wed, 20 Apr 2022 17:04:23 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     linux-gpio@...r.kernel.org,
        Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc:     Luca Ceresoli <luca.ceresoli@...tlin.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jianqun Xu <jay.xu@...k-chips.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] pinctrl: rockchip: fix RK3308 pinmux bits

Am Mittwoch, 20. April 2022, 16:24:31 CEST schrieb Luca Ceresoli:
> Some of the pinmuxing bits described in rk3308_mux_recalced_data are wrong,
> pointing to non-existing registers.
> 
> Fix the entire table.
> 
> Also add a comment in front of each entry with the same string that appears
> in the datasheet to make the table easier to compare with the docs.
> 
> This fix has been tested on real hardware for the gpio3b3_sel entry.
> 
> Fixes: 7825aeb7b208 ("pinctrl: rockchip: add rk3308 SoC support")
> Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>

Reviewed-by: Heiko Stuebner <heiko@...ech.de>

Thanks for walking through the datasheet for the fixes :-)

> ---
>  drivers/pinctrl/pinctrl-rockchip.c | 45 ++++++++++++++++++++----------
>  1 file changed, 30 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index a1b598b86aa9..65fa305b5f59 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -457,95 +457,110 @@ static  struct rockchip_mux_recalced_data rk3128_mux_recalced_data[] = {
>  
>  static struct rockchip_mux_recalced_data rk3308_mux_recalced_data[] = {
>  	{
> +		/* gpio1b6_sel */
>  		.num = 1,
>  		.pin = 14,
>  		.reg = 0x28,
>  		.bit = 12,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1b7_sel */
>  		.num = 1,
>  		.pin = 15,
>  		.reg = 0x2c,
>  		.bit = 0,
>  		.mask = 0x3
>  	}, {
> +		/* gpio1c2_sel */
>  		.num = 1,
>  		.pin = 18,
>  		.reg = 0x30,
>  		.bit = 4,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1c3_sel */
>  		.num = 1,
>  		.pin = 19,
>  		.reg = 0x30,
>  		.bit = 8,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1c4_sel */
>  		.num = 1,
>  		.pin = 20,
>  		.reg = 0x30,
>  		.bit = 12,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1c5_sel */
>  		.num = 1,
>  		.pin = 21,
>  		.reg = 0x34,
>  		.bit = 0,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1c6_sel */
>  		.num = 1,
>  		.pin = 22,
>  		.reg = 0x34,
>  		.bit = 4,
>  		.mask = 0xf
>  	}, {
> +		/* gpio1c7_sel */
>  		.num = 1,
>  		.pin = 23,
>  		.reg = 0x34,
>  		.bit = 8,
>  		.mask = 0xf
>  	}, {
> +		/* gpio3b4_sel */
>  		.num = 3,
>  		.pin = 12,
>  		.reg = 0x68,
>  		.bit = 8,
>  		.mask = 0xf
>  	}, {
> +		/* gpio3b5_sel */
>  		.num = 3,
>  		.pin = 13,
>  		.reg = 0x68,
>  		.bit = 12,
>  		.mask = 0xf
>  	}, {
> +		/* gpio2a2_sel */
>  		.num = 2,
>  		.pin = 2,
> -		.reg = 0x608,
> -		.bit = 0,
> -		.mask = 0x7
> +		.reg = 0x40,
> +		.bit = 4,
> +		.mask = 0x3
>  	}, {
> +		/* gpio2a3_sel */
>  		.num = 2,
>  		.pin = 3,
> -		.reg = 0x608,
> -		.bit = 4,
> -		.mask = 0x7
> +		.reg = 0x40,
> +		.bit = 6,
> +		.mask = 0x3
>  	}, {
> +		/* gpio2c0_sel */
>  		.num = 2,
>  		.pin = 16,
> -		.reg = 0x610,
> -		.bit = 8,
> -		.mask = 0x7
> +		.reg = 0x50,
> +		.bit = 0,
> +		.mask = 0x3
>  	}, {
> +		/* gpio3b2_sel */
>  		.num = 3,
>  		.pin = 10,
> -		.reg = 0x610,
> -		.bit = 0,
> -		.mask = 0x7
> +		.reg = 0x68,
> +		.bit = 4,
> +		.mask = 0x3
>  	}, {
> +		/* gpio3b3_sel */
>  		.num = 3,
>  		.pin = 11,
> -		.reg = 0x610,
> -		.bit = 4,
> -		.mask = 0x7
> +		.reg = 0x68,
> +		.bit = 6,
> +		.mask = 0x3
>  	},
>  };
>  
>