linux-kernel - Re: [PATCH AUTOSEL 5.10 1/7] phy: sun4i-usb: Add support for the H616 USB PHY

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Date:   Tue, 27 Dec 2022 15:58:16 -0600
From:   Samuel Holland <samuel@...lland.org>
To:     Sasha Levin <sashal@...nel.org>, stable@...r.kernel.org
Cc:     Andre Przywara <andre.przywara@....com>,
        Vinod Koul <vkoul@...nel.org>, kishon@...nel.org,
        wens@...e.org, jernej.skrabec@...il.com,
        wsa+renesas@...g-engineering.com, linux-phy@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10 1/7] phy: sun4i-usb: Add support for the H616
 USB PHY

Hi Sasha,

On 12/27/22 14:35, Sasha Levin wrote:
> From: Andre Przywara <andre.przywara@....com>
> 
> [ Upstream commit 0f607406525d25019dd9c498bcc0b42734fc59d5 ]
> 
> The USB PHY used in the Allwinner H616 SoC inherits some traits from its
> various predecessors: it has four full PHYs like the H3, needs some
> extra bits to be set like the H6, and puts SIDDQ on a different bit like
> the A100. Plus it needs this weird PHY2 quirk.
> 
> Name all those properties in a new config struct and assign a new
> compatible name to it.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> Reviewed-by: Samuel Holland <samuel@...lland.org>
> Link: https://lore.kernel.org/r/20221031111358.3387297-5-andre.przywara@arm.com
> Signed-off-by: Vinod Koul <vkoul@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  drivers/phy/allwinner/phy-sun4i-usb.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c
> index 651d5e2a25ce..230987e55ece 100644
> --- a/drivers/phy/allwinner/phy-sun4i-usb.c
> +++ b/drivers/phy/allwinner/phy-sun4i-usb.c
> @@ -974,6 +974,17 @@ static const struct sun4i_usb_phy_cfg sun50i_h6_cfg = {
>  	.missing_phys = BIT(1) | BIT(2),
>  };
>  
> +static const struct sun4i_usb_phy_cfg sun50i_h616_cfg = {
> +	.num_phys = 4,
> +	.type = sun50i_h6_phy,
> +	.disc_thresh = 3,
> +	.phyctl_offset = REG_PHYCTL_A33,
> +	.dedicated_clocks = true,
> +	.phy0_dual_route = true,
> +	.hci_phy_ctl_clear = PHY_CTL_SIDDQ,
> +	.needs_phy2_siddq = true,

This will fail to compile without b45c6d80325b ("phy: sun4i-usb:
Introduce port2 SIDDQ quirk"). However, like Andre mentioned in
reference to the devicetree updates[1], we were not expecting any of
these patches to be backported. Since you already dropped the DT
portion, there is no need to bother with these two patches either.

Regards,
Samuel

[1]: https://lore.kernel.org/lkml/20221220000115.19c152fe@slackpad.lan/

> +};
> +
>  static const struct of_device_id sun4i_usb_phy_of_match[] = {
>  	{ .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
>  	{ .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
> @@ -988,6 +999,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = {
>  	{ .compatible = "allwinner,sun50i-a64-usb-phy",
>  	  .data = &sun50i_a64_cfg},
>  	{ .compatible = "allwinner,sun50i-h6-usb-phy", .data = &sun50i_h6_cfg },
> +	{ .compatible = "allwinner,sun50i-h616-usb-phy", .data = &sun50i_h616_cfg },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);