linux-kernel - Re: [PATCH v1 08/50] clk: samsung: change aclk266

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Date:   Tue, 16 Jul 2019 19:22:53 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Lukasz Luba <l.luba@...tner.samsung.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        b.zolnierkie@...sung.com, krzk@...nel.org, kgene@...nel.org,
        mark.rutland@....com, robh+dt@...nel.org,
        kyungmin.park@...sung.com, a.hajda@...sung.com,
        m.szyprowski@...sung.com, s.nawrocki@...sung.com,
        myungjoo.ham@...sung.com
Subject: Re: [PATCH v1 08/50] clk: samsung: change aclk266_isp clocks
 definitions Exynos5420

Hi,

On 19. 7. 15. 오후 9:43, Lukasz Luba wrote:
> The ACLK266_ISP has different topology in Exynos5420 and 5422/5800.  In
> Exynos5420 this clock does not have dedicated MUX which chooses PLL instead
> it takes the clock from 2-level mux from ACLK266.  In Exynos5422 there is a
> dedicated clock tree and the PLL can be chosen.  The patch adds needed
> MUXes in the exynos5800_mux_cloks, updates exynos5x_mux_clks and
> exynos5420_mux_clks properly. It also adds IDs to mange these clocks from
> DT.
> 
> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> ---
>  drivers/clk/samsung/clk-exynos5420.c | 17 +++++++++++++++--
>  1 file changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
> index 9d54856dbcda..5f251279b4c8 100644
> --- a/drivers/clk/samsung/clk-exynos5420.c
> +++ b/drivers/clk/samsung/clk-exynos5420.c
> @@ -432,6 +432,10 @@ PNAME(mout_group16_5800_p)	= { "dout_osc_div", "mout_mau_epll_clk" };
>  PNAME(mout_mx_mspll_ccore_phy_p) = { "sclk_bpll", "mout_sclk_dpll",
>  					"mout_sclk_mpll", "ff_dout_spll2",
>  					"mout_sclk_spll", "mout_sclk_epll"};
> +PNAME(mout_group17_5800_p)	= { "dout_aclk266_isp", "dout_sclk_sw" };
> +PNAME(mout_group18_5800_p)	= { "dout_osc_div", "mout_sw_aclk266_isp" };
> +PNAME(mout_group19_5800_p)	= { "mout_sclk_cpll", "mout_sclk_dpll",
> +					"mout_sclk_mpll", "mout_sclk_ipll"};
>  
>  /* fixed rate clocks generated outside the soc */
>  static struct samsung_fixed_rate_clock
> @@ -494,6 +498,8 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
>  	MUX(CLK_SCLK_BPLL, "sclk_bpll", mout_bpll_p, SRC_TOP7, 24, 1),
>  	MUX(0, "mout_epll2", mout_epll2_5800_p, SRC_TOP7, 28, 1),
>  
> +	MUX(CLK_MOUT_ACLK266_ISP, "mout_aclk266_isp", mout_group19_5800_p,
> +			SRC_TOP8, 12, 2),
>  	MUX(0, "mout_aclk550_cam", mout_group3_5800_p, SRC_TOP8, 16, 3),
>  	MUX(0, "mout_aclkfl1_550_cam", mout_group3_5800_p, SRC_TOP8, 20, 3),
>  	MUX(0, "mout_aclk432_cam", mout_group6_5800_p, SRC_TOP8, 24, 2),
> @@ -501,6 +507,8 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
>  
>  	MUX_F(CLK_MOUT_USER_MAU_EPLL, "mout_user_mau_epll", mout_group16_5800_p,
>  			SRC_TOP9, 8, 1, CLK_SET_RATE_PARENT, 0),
> +	MUX(CLK_MOUT_USER_ACLK266_ISP, "mout_user_aclk266_isp",
> +			mout_group18_5800_p, SRC_TOP9, 12, 1),
>  	MUX(0, "mout_user_aclk550_cam", mout_group15_5800_p,
>  							SRC_TOP9, 16, 1),
>  	MUX(0, "mout_user_aclkfl1_550_cam", mout_group13_5800_p,
> @@ -510,6 +518,8 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
>  	MUX(0, "mout_user_aclk432_scaler", mout_group9_5800_p,
>  							SRC_TOP9, 28, 1),
>  
> +	MUX(CLK_MOUT_SW_ACLK266_ISP, "mout_sw_aclk266_isp", mout_group17_5800_p,
> +			SRC_TOP13, 12, 1),
>  	MUX(0, "mout_sw_aclk550_cam", mout_group14_5800_p, SRC_TOP13, 16, 1),
>  	MUX(0, "mout_sw_aclkfl1_550_cam", mout_group12_5800_p,
>  							SRC_TOP13, 20, 1),
> @@ -524,6 +534,8 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
>  static const struct samsung_div_clock exynos5800_div_clks[] __initconst = {
>  	DIV(CLK_DOUT_ACLK400_WCORE, "dout_aclk400_wcore",
>  			"mout_aclk400_wcore", DIV_TOP0, 16, 3),
> +	DIV(CLK_DOUT_ACLK266_ISP, "dout_aclk266_isp", "mout_aclk266_isp",
> +				DIV_TOP8, 12, 3),
>  	DIV(0, "dout_aclk550_cam", "mout_aclk550_cam",
>  				DIV_TOP8, 16, 3),
>  	DIV(0, "dout_aclkfl1_550_cam", "mout_aclkfl1_550_cam",
> @@ -574,6 +586,9 @@ static const struct samsung_mux_clock exynos5420_mux_clks[] __initconst = {
>  	MUX(0, "mout_aclk300_disp1", mout_group1_p, SRC_TOP2, 24, 2),
>  	MUX(0, "mout_aclk300_gscl", mout_group1_p, SRC_TOP2, 28, 2),
>  
> +	MUX(CLK_MOUT_USER_ACLK266_ISP, "mout_user_aclk266_isp",
> +			mout_user_aclk266_isp_p, SRC_TOP4, 16, 1),
> +
>  	MUX(CLK_MOUT_MX_MSPLL_CCORE, "mout_mx_mspll_ccore",
>  			mout_group5_5800_p, SRC_TOP7, 16, 2),
>  	MUX_F(0, "mout_mau_epll_clk", mout_mau_epll_clk_p, SRC_TOP7, 20, 2,
> @@ -641,8 +656,6 @@ static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = {
>  			SRC_TOP4, 8, 1),
>  	MUX(0, "mout_user_aclk333_432_isp0", mout_user_aclk333_432_isp0_p,
>  			SRC_TOP4, 12, 1),
> -	MUX(0, "mout_user_aclk266_isp", mout_user_aclk266_isp_p,
> -			SRC_TOP4, 16, 1),
>  	MUX(0, "mout_user_aclk266", mout_user_aclk266_p, SRC_TOP4, 20, 1),
>  	MUX(0, "mout_user_aclk166", mout_user_aclk166_p, SRC_TOP4, 24, 1),
>  	MUX(CLK_MOUT_USER_ACLK333, "mout_user_aclk333", mout_user_aclk333_p,
> 

I checked it on Exynos5420/5422 TRM.

Acked-by: Chanwoo Choi <cw00.choi@...sung.com>

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics