linux-kernel - [PATCH 3/6] perf/imx_ddr: Get and enable optional clks

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Message-Id: <20251023-qm_dts-v1-3-9830d6a45939@nxp.com>
Date: Thu, 23 Oct 2025 14:56:43 -0400
From: Frank Li <Frank.Li@....com>
To: Frank Li <Frank.li@....com>, Xu Yang <xu.yang_2@....com>, 
 Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: Frank Li <frank.li@....com>, linux-arm-kernel@...ts.infradead.org, 
 linux-perf-users@...r.kernel.org, devicetree@...r.kernel.org, 
 imx@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Frank Li <Frank.Li@....com>
Subject: [PATCH 3/6] perf/imx_ddr: Get and enable optional clks

Get and enable optional clks because fsl,imx8dxl-db-pmu have two clocks.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 drivers/perf/fsl_imx8_ddr_perf.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/perf/fsl_imx8_ddr_perf.c b/drivers/perf/fsl_imx8_ddr_perf.c
index 5ba34c606213d255edf27081bb9f63763cca3066..2a8426a74af98cf46725c2c70534829e198746f3 100644
--- a/drivers/perf/fsl_imx8_ddr_perf.c
+++ b/drivers/perf/fsl_imx8_ddr_perf.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/clk.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -732,10 +733,12 @@ static int ddr_perf_offline_cpu(unsigned int cpu, struct hlist_node *node)
 
 static int ddr_perf_probe(struct platform_device *pdev)
 {
+	struct clk_bulk_data *clks;
 	struct ddr_pmu *pmu;
 	struct device_node *np;
 	void __iomem *base;
 	char *name;
+	int nclks;
 	int num;
 	int ret;
 	int irq;
@@ -754,6 +757,10 @@ static int ddr_perf_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pmu);
 
+	nclks = devm_clk_bulk_get_all_enabled(&pdev->dev, &clks);
+	if (nclks < 0)
+		return dev_err_probe(&pdev->dev, nclks, "Failure get clks\n");
+
 	num = ida_alloc(&ddr_ida, GFP_KERNEL);
 	if (num < 0)
 		return num;

-- 
2.34.1