linux-kernel - Re: [PATCH v1 3/4] soc: imx: imx8m-blk-ctrl: Add reset bits for mipi dsi phy

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Date:   Mon, 02 May 2022 12:13:27 +0200
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Viraj Shah <viraj.shah@...utronix.de>, shawnguo@...nel.org,
        s.hauer@...gutronix.de
Cc:     Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Adam Ford <aford173@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/4] soc: imx: imx8m-blk-ctrl: Add reset bits for
 mipi dsi phy

Am Montag, dem 02.05.2022 um 12:02 +0200 schrieb Viraj Shah:
> As per reference manual page 3903, bit 16 (GPR_MIPI_S_RESETN)
> as well as 17 (GPR_MIPI_M_RESETN) are the reset masks for mipi phy reset
> mask.

Nack. The MIPI-S reset is used for the CSI receiver and is already
handled by the appropriate power domain.

Regards,
Lucas

> 
> Signed-off-by: Viraj Shah <viraj.shah@...utronix.de>
> ---
>  drivers/soc/imx/imx8m-blk-ctrl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c
> index ca63fd30e70a..d7638b7fa99d 100644
> --- a/drivers/soc/imx/imx8m-blk-ctrl.c
> +++ b/drivers/soc/imx/imx8m-blk-ctrl.c
> @@ -502,7 +502,7 @@ static const struct imx8m_blk_ctrl_domain_data imx8mm_disp_blk_ctl_domain_data[]
>  		.gpc_name = "mipi-dsi",
>  		.rst_mask = BIT(5),
>  		.clk_mask = BIT(8) | BIT(9),
> -		.mipi_phy_rst_mask = BIT(17),
> +		.mipi_phy_rst_mask = BIT(17) | BIT(16),
>  	},
>  	[IMX8MM_DISPBLK_PD_MIPI_CSI] = {
>  		.name = "dispblk-mipi-csi",