[PATCH 09/13] soc: mediatek: mtk-dvfsrc: Get and Enable DVFSRC clock

Nicolas Frattaroli
2025-11-14T16:54:52Z

The DVFSRC has a clock on all platforms.

Get and enable it in the probe function, so that Linux's common clock
framework knows we're a user of it.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
---
drivers/soc/mediatek/mtk-dvfsrc.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-dvfsrc.c b/drivers/soc/mediatek/mtk-dvfsrc.c
index 3a83fd4baf54..a43d6f913914 100644
--- a/drivers/soc/mediatek/mtk-dvfsrc.c
+++ b/drivers/soc/mediatek/mtk-dvfsrc.c
@@ -7,6 +7,7 @@

#include <linux/arm-smccc.h>
#include <linux/bitfield.h>
+#include <linux/clk.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/of.h>
@@ -83,6 +84,7 @@ struct dvfsrc_opp_desc {
struct dvfsrc_soc_data;
struct mtk_dvfsrc {
struct device *dev;
+ struct clk *clk;
struct platform_device *icc;
struct platform_device *regulator;
const struct dvfsrc_soc_data *dvd;
@@ -650,6 +652,11 @@ static int mtk_dvfsrc_probe(struct platform_device *pdev)
if (IS_ERR(dvfsrc->regs))
return PTR_ERR(dvfsrc->regs);

+ dvfsrc->clk = devm_clk_get_enabled(&pdev->dev, NULL);
+ if (IS_ERR(dvfsrc->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(dvfsrc->clk),
+ "Couldn't get and enable DVFSRC clock\n");
+
arm_smccc_smc(MTK_SIP_DVFSRC_VCOREFS_CONTROL, MTK_SIP_DVFSRC_INIT,
0, 0, 0, 0, 0, 0, &ares);
if (ares.a0)

--
2.51.2