linux-kernel - [PATCH v4 1/4] clk: qcom: branch: Add clk_branch2_mdio

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Message-ID: <20230815085205.9868-2-quic_luoj@quicinc.com>
Date:   Tue, 15 Aug 2023 16:52:02 +0800
From:   Luo Jie <quic_luoj@...cinc.com>
To:     <andersson@...nel.org>, <agross@...nel.org>,
        <konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <catalin.marinas@....com>, <will@...nel.org>,
        <p.zabel@...gutronix.de>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_srichara@...cinc.com>, Luo Jie <quic_luoj@...cinc.com>
Subject: [PATCH v4 1/4] clk: qcom: branch: Add clk_branch2_mdio_ops

Add the clk_branch2_mdio_ops for supporting clock controller
where the hardware register is accessed by MDIO bus, and the
spin clock can't be used because of sleep during the MDIO
operation.

The clock is enabled by the .prepare instead of .enable when
the clk_branch2_mdio_ops is used.

Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
---
 drivers/clk/qcom/clk-branch.c | 7 +++++++
 drivers/clk/qcom/clk-branch.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c
index fc4735f74f0f..5e08c026ca4a 100644
--- a/drivers/clk/qcom/clk-branch.c
+++ b/drivers/clk/qcom/clk-branch.c
@@ -153,3 +153,10 @@ const struct clk_ops clk_branch_simple_ops = {
 	.is_enabled = clk_is_enabled_regmap,
 };
 EXPORT_SYMBOL_GPL(clk_branch_simple_ops);
+
+const struct clk_ops clk_branch2_mdio_ops = {
+	.prepare = clk_branch2_enable,
+	.unprepare = clk_branch2_disable,
+	.is_prepared = clk_is_enabled_regmap,
+};
+EXPORT_SYMBOL_GPL(clk_branch2_mdio_ops);
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index 0cf800b9d08d..4b006e8eec5e 100644
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -85,6 +85,7 @@ extern const struct clk_ops clk_branch_ops;
 extern const struct clk_ops clk_branch2_ops;
 extern const struct clk_ops clk_branch_simple_ops;
 extern const struct clk_ops clk_branch2_aon_ops;
+extern const struct clk_ops clk_branch2_mdio_ops;
 
 #define to_clk_branch(_hw) \
 	container_of(to_clk_regmap(_hw), struct clk_branch, clkr)
-- 
2.17.1