linux-kernel - Re: [PATCH v3 06/10] clk: qcom: clk-alpha-pll: Add support for zonda ole pll configure

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Message-ID: <CAA8EJppBtc2HKcZ2sAgBm=+sxtisp-hsADp-ui6PRTRRixB8xw@mail.gmail.com>
Date: Mon, 29 Jan 2024 06:08:38 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Abel Vesa <abel.vesa@...aro.org>
Cc: Andy Gross <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konrad.dybcio@...aro.org>, Michael Turquette <mturquette@...libre.com>, 
	Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Philipp Zabel <p.zabel@...gutronix.de>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, linux-kernel@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
	devicetree@...r.kernel.org, Rajendra Nayak <quic_rjendra@...cinc.com>
Subject: Re: [PATCH v3 06/10] clk: qcom: clk-alpha-pll: Add support for zonda
 ole pll configure

On Mon, 29 Jan 2024 at 00:52, Abel Vesa <abel.vesa@...aro.org> wrote:
>
> From: Rajendra Nayak <quic_rjendra@...cinc.com>
>
> Zonda ole pll has as extra PLL_OFF_CONFIG_CTL_U2 register, hence add
> support for it.
>
> Signed-off-by: Rajendra Nayak <quic_rjendra@...cinc.com>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
>  drivers/clk/qcom/clk-alpha-pll.c | 26 ++++++++++++++++++++++++++
>  drivers/clk/qcom/clk-alpha-pll.h |  4 ++++
>  2 files changed, 30 insertions(+)
>
> diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
> index 05898d2a8b22..85f8e2ad0b37 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.c
> +++ b/drivers/clk/qcom/clk-alpha-pll.c
> @@ -52,6 +52,7 @@
>  #define PLL_CONFIG_CTL(p)      ((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL])
>  #define PLL_CONFIG_CTL_U(p)    ((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL_U])
>  #define PLL_CONFIG_CTL_U1(p)   ((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL_U1])
> +#define PLL_CONFIG_CTL_U2(p)   ((p)->offset + (p)->regs[PLL_OFF_CONFIG_CTL_U2])
>  #define PLL_TEST_CTL(p)                ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL])
>  #define PLL_TEST_CTL_U(p)      ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U])
>  #define PLL_TEST_CTL_U1(p)     ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U1])
> @@ -228,6 +229,21 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
>                 [PLL_OFF_ALPHA_VAL] = 0x24,
>                 [PLL_OFF_ALPHA_VAL_U] = 0x28,
>         },
> +       [CLK_ALPHA_PLL_TYPE_ZONDA_OLE] =  {
> +               [PLL_OFF_L_VAL] = 0x04,
> +               [PLL_OFF_ALPHA_VAL] = 0x08,
> +               [PLL_OFF_USER_CTL] = 0x0c,
> +               [PLL_OFF_USER_CTL_U] = 0x10,
> +               [PLL_OFF_CONFIG_CTL] = 0x14,
> +               [PLL_OFF_CONFIG_CTL_U] = 0x18,
> +               [PLL_OFF_CONFIG_CTL_U1] = 0x1c,
> +               [PLL_OFF_CONFIG_CTL_U2] = 0x20,
> +               [PLL_OFF_TEST_CTL] = 0x24,
> +               [PLL_OFF_TEST_CTL_U] = 0x28,
> +               [PLL_OFF_TEST_CTL_U1] = 0x2c,
> +               [PLL_OFF_OPMODE] = 0x30,
> +               [PLL_OFF_STATUS] = 0x3c,
> +       },
>  };
>  EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
>
> @@ -2093,6 +2109,16 @@ const struct clk_ops clk_alpha_pll_zonda_ops = {
>  };
>  EXPORT_SYMBOL_GPL(clk_alpha_pll_zonda_ops);
>
> +const struct clk_ops clk_alpha_pll_zonda_ole_ops = {
> +       .enable = clk_zonda_pll_enable,
> +       .disable = clk_zonda_pll_disable,
> +       .is_enabled = clk_trion_pll_is_enabled,
> +       .recalc_rate = clk_trion_pll_recalc_rate,
> +       .round_rate = clk_alpha_pll_round_rate,
> +       .set_rate = clk_zonda_pll_set_rate,
> +};
> +EXPORT_SYMBOL(clk_alpha_pll_zonda_ole_ops);

Let's maybe follow the existing example and #define
clk_alpha_pll_zonda_ole_ops clk_alpha_pl_zonda_ops ?
See the defines at clk-alpha-pll.h

LGTM otherwise

> +
>  void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
>                                  const struct alpha_pll_config *config)
>  {
> diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
> index a1a75bb12fe8..99a3db9de4a1 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.h
> +++ b/drivers/clk/qcom/clk-alpha-pll.h
> @@ -21,6 +21,7 @@ enum {
>         CLK_ALPHA_PLL_TYPE_LUCID = CLK_ALPHA_PLL_TYPE_TRION,
>         CLK_ALPHA_PLL_TYPE_AGERA,
>         CLK_ALPHA_PLL_TYPE_ZONDA,
> +       CLK_ALPHA_PLL_TYPE_ZONDA_OLE,
>         CLK_ALPHA_PLL_TYPE_LUCID_EVO,
>         CLK_ALPHA_PLL_TYPE_LUCID_OLE,
>         CLK_ALPHA_PLL_TYPE_RIVIAN_EVO,
> @@ -42,6 +43,7 @@ enum {
>         PLL_OFF_CONFIG_CTL,
>         PLL_OFF_CONFIG_CTL_U,
>         PLL_OFF_CONFIG_CTL_U1,
> +       PLL_OFF_CONFIG_CTL_U2,
>         PLL_OFF_TEST_CTL,
>         PLL_OFF_TEST_CTL_U,
>         PLL_OFF_TEST_CTL_U1,
> @@ -119,6 +121,7 @@ struct alpha_pll_config {
>         u32 config_ctl_val;
>         u32 config_ctl_hi_val;
>         u32 config_ctl_hi1_val;
> +       u32 config_ctl_hi2_val;
>         u32 user_ctl_val;
>         u32 user_ctl_hi_val;
>         u32 user_ctl_hi1_val;
> @@ -173,6 +176,7 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_5lpe_ops;
>
>  extern const struct clk_ops clk_alpha_pll_zonda_ops;
>  #define clk_alpha_pll_postdiv_zonda_ops clk_alpha_pll_postdiv_fabia_ops
> +extern const struct clk_ops clk_alpha_pll_zonda_ole_ops;
>
>  extern const struct clk_ops clk_alpha_pll_lucid_evo_ops;
>  extern const struct clk_ops clk_alpha_pll_reset_lucid_evo_ops;
>
> --
> 2.34.1
>


-- 
With best wishes
Dmitry