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Message-ID: <68c3d065-ff8e-1ed5-204a-27bacebdbbb8@samsung.com>
Date: Tue, 30 Apr 2019 10:31:48 +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-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc: b.zolnierkie@...sung.com, krzk@...nel.org, kgene@...nel.org,
kyungmin.park@...sung.com, m.szyprowski@...sung.com,
s.nawrocki@...sung.com, myungjoo.ham@...sung.com,
keescook@...omium.org, tony@...mide.com, jroedel@...e.de,
treding@...dia.com, digetx@...il.com, willy.mh.wolff.ml@...il.com
Subject: Re: [PATCH v6 02/10] clk: samsung: add new clocks for DMC for
Exynos5422 SoC
Hi Lukasz,
I have no objection about this patch.
Instead, as I commented on v4, in order to reduce the confusion
about multiple clock definitions with same bit range of DIV_CDREX0,
You need to add the additional comment and you better to
define the three clocks at the nearby in this driver.
(CLKDIV_PCLK_CDREX, CLKDIV_PCLK_DREX0, CLKDIV_PCLK_DREX1)
If they are scattered, it is difficult for understanding
why they are developed like this.
[1] [v4,2/8] clk: samsung: add new clocks for DMC for Exynos5422 SoC
- https://lkml.org/lkml/2019/2/12/12
Regards,
Chanwoo Choi
On 19. 4. 19. 오후 11:19, Lukasz Luba wrote:
> This patch provides support for clocks needed for Dynamic Memory Controller
> in Exynos5422 SoC. It adds CDREX base register addresses, new DIV, MUX and
> GATE entries.
>
> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> ---
> drivers/clk/samsung/clk-exynos5420.c | 46 ++++++++++++++++++++++++++++++++----
> 1 file changed, 42 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
> index 34cce3c..d9e6653 100644
> --- a/drivers/clk/samsung/clk-exynos5420.c
> +++ b/drivers/clk/samsung/clk-exynos5420.c
> @@ -134,6 +134,8 @@
> #define SRC_CDREX 0x20200
> #define DIV_CDREX0 0x20500
> #define DIV_CDREX1 0x20504
> +#define GATE_BUS_CDREX0 0x20700
> +#define GATE_BUS_CDREX1 0x20704
> #define KPLL_LOCK 0x28000
> #define KPLL_CON0 0x28100
> #define SRC_KFC 0x28200
> @@ -248,6 +250,8 @@ static const unsigned long exynos5x_clk_regs[] __initconst = {
> DIV_CDREX1,
> SRC_KFC,
> DIV_KFC0,
> + GATE_BUS_CDREX0,
> + GATE_BUS_CDREX1,
> };
>
> static const unsigned long exynos5800_clk_regs[] __initconst = {
> @@ -425,6 +429,9 @@ PNAME(mout_group13_5800_p) = { "dout_osc_div", "mout_sw_aclkfl1_550_cam" };
> PNAME(mout_group14_5800_p) = { "dout_aclk550_cam", "dout_sclk_sw" };
> PNAME(mout_group15_5800_p) = { "dout_osc_div", "mout_sw_aclk550_cam" };
> 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"};
>
> /* fixed rate clocks generated outside the soc */
> static struct samsung_fixed_rate_clock
> @@ -450,7 +457,7 @@ static const struct samsung_fixed_factor_clock
> static const struct samsung_fixed_factor_clock
> exynos5800_fixed_factor_clks[] __initconst = {
> FFACTOR(0, "ff_dout_epll2", "mout_sclk_epll", 1, 2, 0),
> - FFACTOR(0, "ff_dout_spll2", "mout_sclk_spll", 1, 2, 0),
> + FFACTOR(CLK_FF_DOUT_SPLL2, "ff_dout_spll2", "mout_sclk_spll", 1, 2, 0),
> };
>
> static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
> @@ -472,11 +479,14 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
> MUX(0, "mout_aclk300_disp1", mout_group5_5800_p, SRC_TOP2, 24, 2),
> MUX(0, "mout_aclk300_gscl", mout_group5_5800_p, SRC_TOP2, 28, 2),
>
> + MUX(CLK_MOUT_MX_MSPLL_CCORE_PHY, "mout_mx_mspll_ccore_phy",
> + mout_mx_mspll_ccore_phy_p, SRC_TOP7, 0, 3),
> +
> MUX(CLK_MOUT_MX_MSPLL_CCORE, "mout_mx_mspll_ccore",
> - mout_mx_mspll_ccore_p, SRC_TOP7, 16, 2),
> + mout_mx_mspll_ccore_p, SRC_TOP7, 16, 3),
> MUX_F(CLK_MOUT_MAU_EPLL, "mout_mau_epll_clk", mout_mau_epll_clk_5800_p,
> SRC_TOP7, 20, 2, CLK_SET_RATE_PARENT, 0),
> - MUX(0, "sclk_bpll", mout_bpll_p, SRC_TOP7, 24, 1),
> + 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(0, "mout_aclk550_cam", mout_group3_5800_p, SRC_TOP8, 16, 3),
> @@ -648,7 +658,7 @@ static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = {
>
> MUX(0, "mout_sclk_mpll", mout_mpll_p, SRC_TOP6, 0, 1),
> MUX(CLK_MOUT_VPLL, "mout_sclk_vpll", mout_vpll_p, SRC_TOP6, 4, 1),
> - MUX(0, "mout_sclk_spll", mout_spll_p, SRC_TOP6, 8, 1),
> + MUX(CLK_MOUT_SCLK_SPLL, "mout_sclk_spll", mout_spll_p, SRC_TOP6, 8, 1),
> MUX(0, "mout_sclk_ipll", mout_ipll_p, SRC_TOP6, 12, 1),
> MUX(0, "mout_sclk_rpll", mout_rpll_p, SRC_TOP6, 16, 1),
> MUX_F(CLK_MOUT_EPLL, "mout_sclk_epll", mout_epll_p, SRC_TOP6, 20, 1,
> @@ -817,6 +827,8 @@ static const struct samsung_div_clock exynos5x_div_clks[] __initconst = {
> DIV(CLK_DOUT_CLK2X_PHY0, "dout_clk2x_phy0", "dout_sclk_cdrex",
> DIV_CDREX0, 3, 5),
>
> + DIV(0, "dout_pclk_drex0", "dout_cclk_drex0", DIV_CDREX0, 28, 3),
> +
> DIV(CLK_DOUT_PCLK_CORE_MEM, "dout_pclk_core_mem", "mout_mclk_cdrex",
> DIV_CDREX1, 8, 3),
>
> @@ -1170,6 +1182,32 @@ static const struct samsung_gate_clock exynos5x_gate_clks[] __initconst = {
> GATE_TOP_SCLK_ISP, 12, CLK_SET_RATE_PARENT, 0),
>
> GATE(CLK_G3D, "g3d", "mout_user_aclk_g3d", GATE_IP_G3D, 9, 0, 0),
> +
> + /* CDREX */
> + GATE(CLK_CLKM_PHY0, "clkm_phy0", "dout_sclk_cdrex",
> + GATE_BUS_CDREX0, 0, 0, 0),
> + GATE(CLK_CLKM_PHY1, "clkm_phy1", "dout_sclk_cdrex",
> + GATE_BUS_CDREX0, 1, 0, 0),
> + GATE(0, "mx_mspll_ccore_phy", "mout_mx_mspll_ccore_phy",
> + SRC_MASK_TOP7, 0, CLK_IGNORE_UNUSED, 0),
> +
> + GATE(CLK_ACLK_PPMU_DREX1_1, "aclk_ppmu_drex1_1", "dout_aclk_cdrex1",
> + GATE_BUS_CDREX1, 12, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_PPMU_DREX1_0, "aclk_ppmu_drex1_0", "dout_aclk_cdrex1",
> + GATE_BUS_CDREX1, 13, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_PPMU_DREX0_1, "aclk_ppmu_drex0_1", "dout_aclk_cdrex1",
> + GATE_BUS_CDREX1, 14, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_PPMU_DREX0_0, "aclk_ppmu_drex0_0", "dout_aclk_cdrex1",
> + GATE_BUS_CDREX1, 15, CLK_IGNORE_UNUSED, 0),
> +
> + GATE(CLK_PCLK_PPMU_DREX1_1, "pclk_ppmu_drex1_1", "dout_pclk_cdrex",
> + GATE_BUS_CDREX1, 26, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_PPMU_DREX1_0, "pclk_ppmu_drex1_0", "dout_pclk_cdrex",
> + GATE_BUS_CDREX1, 27, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_PPMU_DREX0_1, "pclk_ppmu_drex0_1", "dout_pclk_cdrex",
> + GATE_BUS_CDREX1, 28, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_PPMU_DREX0_0, "pclk_ppmu_drex0_0", "dout_pclk_cdrex",
> + GATE_BUS_CDREX1, 29, CLK_IGNORE_UNUSED, 0),
> };
>
> static const struct samsung_div_clock exynos5x_disp_div_clks[] __initconst = {
>
--
Best Regards,
Chanwoo Choi
Samsung Electronics
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