linux-kernel - [PATCH 4/8] clk: qcom: Add A7 PLL support for SDX65

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Message-Id: <1644821987-27343-1-git-send-email-quic_rohiagar@quicinc.com>
Date:   Mon, 14 Feb 2022 12:29:47 +0530
From:   Rohit Agarwal <quic_rohiagar@...cinc.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Rohit Agarwal <quic_rohiagar@...cinc.com>
Subject: [PATCH 4/8] clk: qcom: Add A7 PLL support for SDX65

Add support for PLL found in Qualcomm SDX65 platforms which is used to
provide clock to the Cortex A7 CPU via a mux. This PLL can provide high
frequency clock to the CPU above 1GHz as compared to the other sources
like GPLL0.

In this driver, the power domain is attached to the cpudev. This is
required for CPUFreq functionality and there seems to be no better place
to do other than this driver (no dedicated CPUFreq driver).

Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
---
 drivers/clk/qcom/Kconfig  | 6 +++---
 drivers/clk/qcom/a7-pll.c | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 6cd0634..1904ba1 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -29,11 +29,11 @@ config QCOM_A53PLL
 	  devices.
 
 config QCOM_A7PLL
-	tristate "SDX55 A7 PLL"
+	tristate "SDX55 like A7 PLL"
 	help
-	  Support for the A7 PLL on SDX55 devices. It provides the CPU with
+	  Support for the A7 PLL on SDX55 like devices. It provides the CPU with
 	  frequencies above 1GHz.
-	  Say Y if you want to support higher CPU frequencies on SDX55
+	  Say Y if you want to support higher CPU frequencies on SDX55 like
 	  devices.
 
 config QCOM_CLK_APCS_MSM8916
diff --git a/drivers/clk/qcom/a7-pll.c b/drivers/clk/qcom/a7-pll.c
index c4a53e5..adb2121 100644
--- a/drivers/clk/qcom/a7-pll.c
+++ b/drivers/clk/qcom/a7-pll.c
@@ -84,6 +84,7 @@ static int qcom_a7pll_probe(struct platform_device *pdev)
 
 static const struct of_device_id qcom_a7pll_match_table[] = {
 	{ .compatible = "qcom,sdx55-a7pll" },
+	{ .compatible = "qcom,sdx65-a7pll" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, qcom_a7pll_match_table);
-- 
2.7.4