linux-kernel - [PATCH v2 1/5] clk: qcom: gcc: limit GPLL0_AO

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Message-Id: <20190912141534.28870-2-jorge.ramirez-ortiz@linaro.org>
Date:   Thu, 12 Sep 2019 16:15:30 +0200
From:   Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>
To:     jorge.ramirez-ortiz@...aro.org, sboyd@...nel.org,
        agross@...nel.org, mturquette@...libre.com,
        bjorn.andersson@...aro.org
Cc:     niklas.cassel@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/5] clk: qcom: gcc: limit GPLL0_AO_OUT operating frequency

Limit the GPLL0_AO_OUT_MAIN operating frequency as per its hardware
specifications.

Co-developed-by: Niklas Cassel <niklas.cassel@...aro.org>
Signed-off-by: Niklas Cassel <niklas.cassel@...aro.org>
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Acked-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/clk/qcom/clk-alpha-pll.c | 8 ++++++++
 drivers/clk/qcom/clk-alpha-pll.h | 1 +
 drivers/clk/qcom/gcc-qcs404.c    | 2 +-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 0ced4a5a9a17..ef51f302bdf0 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -730,6 +730,14 @@ static long alpha_pll_huayra_round_rate(struct clk_hw *hw, unsigned long rate,
 	return alpha_huayra_pll_round_rate(rate, *prate, &l, &a);
 }
 
+const struct clk_ops clk_alpha_pll_fixed_ops = {
+	.enable = clk_alpha_pll_enable,
+	.disable = clk_alpha_pll_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.recalc_rate = clk_alpha_pll_recalc_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fixed_ops);
+
 const struct clk_ops clk_alpha_pll_ops = {
 	.enable = clk_alpha_pll_enable,
 	.disable = clk_alpha_pll_disable,
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index 66755f0f84fc..6b4eb74706b4 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -104,6 +104,7 @@ struct alpha_pll_config {
 };
 
 extern const struct clk_ops clk_alpha_pll_ops;
+extern const struct clk_ops clk_alpha_pll_fixed_ops;
 extern const struct clk_ops clk_alpha_pll_hwfsm_ops;
 extern const struct clk_ops clk_alpha_pll_postdiv_ops;
 extern const struct clk_ops clk_alpha_pll_huayra_ops;
diff --git a/drivers/clk/qcom/gcc-qcs404.c b/drivers/clk/qcom/gcc-qcs404.c
index 29cf464dd2c8..18c6563889f3 100644
--- a/drivers/clk/qcom/gcc-qcs404.c
+++ b/drivers/clk/qcom/gcc-qcs404.c
@@ -330,7 +330,7 @@ static struct clk_alpha_pll gpll0_ao_out_main = {
 			.parent_names = (const char *[]){ "cxo" },
 			.num_parents = 1,
 			.flags = CLK_IS_CRITICAL,
-			.ops = &clk_alpha_pll_ops,
+			.ops = &clk_alpha_pll_fixed_ops,
 		},
 	},
 };
-- 
2.23.0