linux-kernel - Re: [PATCH 2/4] nvmem: sunxi_sid: Drop the workaround on A64

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Date:   Mon, 15 Aug 2022 16:37:14 +0800
From:   Icenowy Zheng <uwu@...nowy.me>
To:     Samuel Holland <samuel@...lland.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH 2/4] nvmem: sunxi_sid: Drop the workaround on A64

在 2022-08-14星期日的 12:36 -0500，Samuel Holland写道：
> Now that the SRAM readout code is fixed by using 32-bit accesses, it
> always returns the same values as register readout, so the A64
> variant
> no longer needs the workaround. This makes the D1 variant structure
> redundant, so remove it.

Is this really tested on A64?

> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
> 
>  drivers/nvmem/sunxi_sid.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/drivers/nvmem/sunxi_sid.c b/drivers/nvmem/sunxi_sid.c
> index 92dfe4cb10e3..a970f1741cc6 100644
> --- a/drivers/nvmem/sunxi_sid.c
> +++ b/drivers/nvmem/sunxi_sid.c
> @@ -197,15 +197,9 @@ static const struct sunxi_sid_cfg sun8i_h3_cfg =
> {
>         .need_register_readout = true,
>  };
>  
> -static const struct sunxi_sid_cfg sun20i_d1_cfg = {
> -       .value_offset = 0x200,
> -       .size = 0x100,
> -};
> -
>  static const struct sunxi_sid_cfg sun50i_a64_cfg = {
>         .value_offset = 0x200,
>         .size = 0x100,
> -       .need_register_readout = true,
>  };
>  
>  static const struct sunxi_sid_cfg sun50i_h6_cfg = {
> @@ -218,7 +212,7 @@ static const struct of_device_id
> sunxi_sid_of_match[] = {
>         { .compatible = "allwinner,sun7i-a20-sid", .data =
> &sun7i_a20_cfg },
>         { .compatible = "allwinner,sun8i-a83t-sid", .data =
> &sun50i_a64_cfg },
>         { .compatible = "allwinner,sun8i-h3-sid", .data =
> &sun8i_h3_cfg },
> -       { .compatible = "allwinner,sun20i-d1-sid", .data =
> &sun20i_d1_cfg },
> +       { .compatible = "allwinner,sun20i-d1-sid", .data =
> &sun50i_a64_cfg },
>         { .compatible = "allwinner,sun50i-a64-sid", .data =
> &sun50i_a64_cfg },
>         { .compatible = "allwinner,sun50i-h5-sid", .data =
> &sun50i_a64_cfg },
>         { .compatible = "allwinner,sun50i-h6-sid", .data =
> &sun50i_h6_cfg },