From 78ece307f82397629be958bc46d7573b4fe3cc86 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 21 Jun 2024 17:22:40 -0500 Subject: [PATCH] counter: ti-eqep: enable clock at probe [ Upstream commit 0cf81c73e4c6a4861128a8f27861176ec312af4e ] The TI eQEP clock is both a functional and interface clock. Since it is required for the device to function, we should be enabling it at probe. Up to now, we've just been lucky that the clock was enabled by something else on the system already. Fixes: f213729f6796 ("counter: new TI eQEP driver") Reviewed-by: Judith Mendez Signed-off-by: David Lechner Link: https://lore.kernel.org/r/20240621-ti-eqep-enable-clock-v2-1-edd3421b54d4@baylibre.com Signed-off-by: William Breathitt Gray Signed-off-by: Sasha Levin --- drivers/counter/ti-eqep.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/counter/ti-eqep.c b/drivers/counter/ti-eqep.c index 65df9ef5b5bc..634399881929 100644 --- a/drivers/counter/ti-eqep.c +++ b/drivers/counter/ti-eqep.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -349,6 +350,7 @@ static int ti_eqep_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct ti_eqep_cnt *priv; void __iomem *base; + struct clk *clk; int err; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); @@ -388,6 +390,10 @@ static int ti_eqep_probe(struct platform_device *pdev) pm_runtime_enable(dev); pm_runtime_get_sync(dev); + clk = devm_clk_get_enabled(dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "failed to enable clock\n"); + err = counter_register(&priv->counter); if (err < 0) { pm_runtime_put_sync(dev);