linux-kernel - Re: [PATCH 1/5] clk: imx: imx8ulp: Fix XBAR_DIVBUS and AD

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Date:   Sun, 9 Apr 2023 17:09:27 +0300
From:   Abel Vesa <abel.vesa@...aro.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     abelvesa@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>, Jacky Bai <ping.bai@....com>,
        Ye Li <ye.li@....com>
Subject: Re: [PATCH 1/5] clk: imx: imx8ulp: Fix XBAR_DIVBUS and AD_SLOW clock
 parents

On 23-03-31 14:38:10, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> XBAR_DIVBUS and AD_SLOW should set parent to XBAR_AD_DIVPLAT and
> XBAR_DIVBUS respectively, not the NIC_AD. otherwise we will get
> wrong clock rate.
> 
> Fixes: c43a801a5789 ("clk: imx: Add clock driver for imx8ulp")
> Reviewed-by: Jacky Bai <ping.bai@....com>
> Signed-off-by: Ye Li <ye.li@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>

Reviewed-by: Abel Vesa <abel.vesa@...aro.org>

> ---
>  drivers/clk/imx/clk-imx8ulp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/imx/clk-imx8ulp.c b/drivers/clk/imx/clk-imx8ulp.c
> index a07df3b44703..89121037a8f0 100644
> --- a/drivers/clk/imx/clk-imx8ulp.c
> +++ b/drivers/clk/imx/clk-imx8ulp.c
> @@ -200,8 +200,8 @@ static int imx8ulp_clk_cgc1_init(struct platform_device *pdev)
>  	clks[IMX8ULP_CLK_NIC_AD_DIVPLAT] = imx_clk_hw_divider_flags("nic_ad_divplat", "nic_sel", base + 0x34, 21, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
>  	clks[IMX8ULP_CLK_NIC_PER_DIVPLAT] = imx_clk_hw_divider_flags("nic_per_divplat", "nic_ad_divplat", base + 0x34, 14, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
>  	clks[IMX8ULP_CLK_XBAR_AD_DIVPLAT] = imx_clk_hw_divider_flags("xbar_ad_divplat", "nic_ad_divplat", base + 0x38, 14, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
> -	clks[IMX8ULP_CLK_XBAR_DIVBUS] = imx_clk_hw_divider_flags("xbar_divbus", "nic_ad_divplat", base + 0x38, 7, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
> -	clks[IMX8ULP_CLK_XBAR_AD_SLOW] = imx_clk_hw_divider_flags("xbar_ad_slow", "nic_ad_divplat", base + 0x38, 0, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
> +	clks[IMX8ULP_CLK_XBAR_DIVBUS] = imx_clk_hw_divider_flags("xbar_divbus", "xbar_ad_divplat", base + 0x38, 7, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
> +	clks[IMX8ULP_CLK_XBAR_AD_SLOW] = imx_clk_hw_divider_flags("xbar_ad_slow", "xbar_divbus", base + 0x38, 0, 6, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
>  
>  	clks[IMX8ULP_CLK_SOSC_DIV1_GATE] = imx_clk_hw_gate_dis("sosc_div1_gate", "sosc", base + 0x108, 7);
>  	clks[IMX8ULP_CLK_SOSC_DIV2_GATE] = imx_clk_hw_gate_dis("sosc_div2_gate", "sosc", base + 0x108, 15);
> -- 
> 2.37.1
>