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Date: Wed, 14 Dec 2022 18:25:01 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Abel Vesa <abel.vesa@...aro.org>, Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Mike Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-clk@...r.kernel.org
Subject: Re: [PATCH v6 4/5] clk: qcom: rpmh: Add support for SM8550 rpmh
clocks
On 07/12/2022 00:45, Abel Vesa wrote:
> Adds the RPMH clocks present in SM8550 SoC.
>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
> drivers/clk/qcom/clk-rpmh.c | 110 +++++++++++++++++++++++++++++-------
> 1 file changed, 90 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/clk/qcom/clk-rpmh.c b/drivers/clk/qcom/clk-rpmh.c
> index 2c2ef4b6d130..ce81c76ed0fd 100644
> --- a/drivers/clk/qcom/clk-rpmh.c
> +++ b/drivers/clk/qcom/clk-rpmh.c
> @@ -130,6 +130,34 @@ static DEFINE_MUTEX(rpmh_clk_lock);
> }, \
> }
>
> +#define DEFINE_CLK_FIXED_FACTOR(_name, _parent_name, _div) \
> + static struct clk_fixed_factor clk_fixed_factor##_##_name = { \
> + .mult = 1, \
> + .div = _div, \
> + .hw.init = &(struct clk_init_data){ \
> + .ops = &clk_fixed_factor_ops, \
> + .name = #_name, \
> + .parent_data = &(const struct clk_parent_data){ \
> + .fw_name = #_parent_name, \
> + .name = #_parent_name, \
> + }, \
> + .num_parents = 1, \
> + }, \
> + }; \
> + static struct clk_fixed_factor clk_fixed_factor##_##_name##_ao = { \
> + .mult = 1, \
> + .div = _div, \
> + .hw.init = &(struct clk_init_data){ \
> + .ops = &clk_fixed_factor_ops, \
> + .name = #_name "_ao", \
> + .parent_data = &(const struct clk_parent_data){ \
> + .fw_name = #_parent_name "_ao", \
> + .name = #_parent_name "_ao", \
> + }, \
> + .num_parents = 1, \
> + }, \
> + }
> +
> static inline struct clk_rpmh *to_clk_rpmh(struct clk_hw *_hw)
> {
> return container_of(_hw, struct clk_rpmh, hw);
> @@ -345,6 +373,8 @@ DEFINE_CLK_RPMH_ARC(bi_tcxo, "xo.lvl", 0x3, 2);
> DEFINE_CLK_RPMH_ARC(bi_tcxo, "xo.lvl", 0x3, 4);
> DEFINE_CLK_RPMH_ARC(qlink, "qphy.lvl", 0x1, 4);
>
> +DEFINE_CLK_FIXED_FACTOR(bi_tcxo_div2, bi_tcxo, 2);
> +
> DEFINE_CLK_RPMH_VRM(ln_bb_clk1, _a2, "lnbclka1", 2);
> DEFINE_CLK_RPMH_VRM(ln_bb_clk2, _a2, "lnbclka2", 2);
> DEFINE_CLK_RPMH_VRM(ln_bb_clk3, _a2, "lnbclka3", 2);
> @@ -366,6 +396,16 @@ DEFINE_CLK_RPMH_VRM(rf_clk2, _d, "rfclkd2", 1);
> DEFINE_CLK_RPMH_VRM(rf_clk3, _d, "rfclkd3", 1);
> DEFINE_CLK_RPMH_VRM(rf_clk4, _d, "rfclkd4", 1);
>
> +DEFINE_CLK_RPMH_VRM(clk1, _a1, "clka1", 1);
> +DEFINE_CLK_RPMH_VRM(clk2, _a1, "clka2", 1);
> +DEFINE_CLK_RPMH_VRM(clk3, _a1, "clka3", 1);
> +DEFINE_CLK_RPMH_VRM(clk4, _a1, "clka4", 1);
> +DEFINE_CLK_RPMH_VRM(clk5, _a1, "clka5", 1);
> +
> +DEFINE_CLK_RPMH_VRM(clk6, _a2, "clka6", 2);
> +DEFINE_CLK_RPMH_VRM(clk7, _a2, "clka7", 2);
> +DEFINE_CLK_RPMH_VRM(clk8, _a2, "clka8", 2);
> +
> DEFINE_CLK_RPMH_VRM(div_clk1, _div2, "divclka1", 2);
>
> DEFINE_CLK_RPMH_BCM(ce, "CE0");
> @@ -576,6 +616,33 @@ static const struct clk_rpmh_desc clk_rpmh_sm8450 = {
> .num_clks = ARRAY_SIZE(sm8450_rpmh_clocks),
> };
>
> +static struct clk_hw *sm8550_rpmh_clocks[] = {
> + [RPMH_CXO_PAD_CLK] = &clk_rpmh_bi_tcxo_div2.hw,
> + [RPMH_CXO_PAD_CLK_A] = &clk_rpmh_bi_tcxo_div2_ao.hw,
> + [RPMH_CXO_CLK] = &clk_fixed_factor_bi_tcxo_div2.hw,
> + [RPMH_CXO_CLK_A] = &clk_fixed_factor_bi_tcxo_div2_ao.hw,
> + [RPMH_LN_BB_CLK1] = &clk_rpmh_clk6_a2.hw,
> + [RPMH_LN_BB_CLK1_A] = &clk_rpmh_clk6_a2_ao.hw,
> + [RPMH_LN_BB_CLK2] = &clk_rpmh_clk7_a2.hw,
> + [RPMH_LN_BB_CLK2_A] = &clk_rpmh_clk7_a2_ao.hw,
> + [RPMH_LN_BB_CLK3] = &clk_rpmh_clk8_a2.hw,
> + [RPMH_LN_BB_CLK3_A] = &clk_rpmh_clk8_a2_ao.hw,
> + [RPMH_RF_CLK1] = &clk_rpmh_clk1_a1.hw,
> + [RPMH_RF_CLK1_A] = &clk_rpmh_clk1_a1_ao.hw,
> + [RPMH_RF_CLK2] = &clk_rpmh_clk2_a1.hw,
> + [RPMH_RF_CLK2_A] = &clk_rpmh_clk2_a1_ao.hw,
> + [RPMH_RF_CLK3] = &clk_rpmh_clk3_a1.hw,
> + [RPMH_RF_CLK3_A] = &clk_rpmh_clk3_a1_ao.hw,
> + [RPMH_RF_CLK4] = &clk_rpmh_clk4_a1.hw,
> + [RPMH_RF_CLK4_A] = &clk_rpmh_clk4_a1_ao.hw,
> + [RPMH_IPA_CLK] = &clk_rpmh_ipa.hw,
> +};
> +
> +static const struct clk_rpmh_desc clk_rpmh_sm8550 = {
> + .clks = sm8550_rpmh_clocks,
> + .num_clks = ARRAY_SIZE(sm8550_rpmh_clocks),
> +};
> +
> static struct clk_hw *sc7280_rpmh_clocks[] = {
> [RPMH_CXO_CLK] = &clk_rpmh_bi_tcxo_div4.hw,
> [RPMH_CXO_CLK_A] = &clk_rpmh_bi_tcxo_div4_ao.hw,
> @@ -683,29 +750,31 @@ static int clk_rpmh_probe(struct platform_device *pdev)
>
> name = hw_clks[i]->init->name;
>
> - rpmh_clk = to_clk_rpmh(hw_clks[i]);
> - res_addr = cmd_db_read_addr(rpmh_clk->res_name);
> - if (!res_addr) {
> - dev_err(&pdev->dev, "missing RPMh resource address for %s\n",
> - rpmh_clk->res_name);
> - return -ENODEV;
> - }
> + if (hw_clks[i]->init->ops != &clk_fixed_factor_ops) {
We discussed this separately, the fixed factor clocks will be moved to
the child nodes, leaving rpmhcc with only cmd-db based clocks.
> + rpmh_clk = to_clk_rpmh(hw_clks[i]);
> + res_addr = cmd_db_read_addr(rpmh_clk->res_name);
> + if (!res_addr) {
> + dev_err(&pdev->dev, "missing RPMh resource address for %s\n",
> + rpmh_clk->res_name);
> + return -ENODEV;
> + }
>
> - data = cmd_db_read_aux_data(rpmh_clk->res_name, &aux_data_len);
> - if (IS_ERR(data)) {
> - ret = PTR_ERR(data);
> - dev_err(&pdev->dev,
> - "error reading RPMh aux data for %s (%d)\n",
> - rpmh_clk->res_name, ret);
> - return ret;
> - }
> + data = cmd_db_read_aux_data(rpmh_clk->res_name, &aux_data_len);
> + if (IS_ERR(data)) {
> + ret = PTR_ERR(data);
> + dev_err(&pdev->dev,
> + "error reading RPMh aux data for %s (%d)\n",
> + rpmh_clk->res_name, ret);
> + return ret;
> + }
>
> - /* Convert unit from Khz to Hz */
> - if (aux_data_len == sizeof(*data))
> - rpmh_clk->unit = le32_to_cpu(data->unit) * 1000ULL;
> + /* Convert unit from Khz to Hz */
> + if (aux_data_len == sizeof(*data))
> + rpmh_clk->unit = le32_to_cpu(data->unit) * 1000ULL;
>
> - rpmh_clk->res_addr += res_addr;
> - rpmh_clk->dev = &pdev->dev;
> + rpmh_clk->res_addr += res_addr;
> + rpmh_clk->dev = &pdev->dev;
> + }
>
> ret = devm_clk_hw_register(&pdev->dev, hw_clks[i]);
> if (ret) {
> @@ -741,6 +810,7 @@ static const struct of_device_id clk_rpmh_match_table[] = {
> { .compatible = "qcom,sm8250-rpmh-clk", .data = &clk_rpmh_sm8250},
> { .compatible = "qcom,sm8350-rpmh-clk", .data = &clk_rpmh_sm8350},
> { .compatible = "qcom,sm8450-rpmh-clk", .data = &clk_rpmh_sm8450},
> + { .compatible = "qcom,sm8550-rpmh-clk", .data = &clk_rpmh_sm8550},
> { .compatible = "qcom,sc7280-rpmh-clk", .data = &clk_rpmh_sc7280},
> { }
> };
--
With best wishes
Dmitry
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