raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

counter: ti-eqep: enable clock at probe

Browse Source 
[ Upstream commit 0cf81c73e4 ]

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: f213729f67 ("counter: new TI eQEP driver")
Reviewed-by: Judith Mendez <jm@ti.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240621-ti-eqep-enable-clock-v2-1-edd3421b54d4@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Lechner
2024-06-21 17:22:40 -05:00
committed by Greg Kroah-Hartman
parent bd1e42e0f2
commit 2747ad36ad
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/counter/ti-eqep.c
View File

@@ -6,6 +6,7 @@
*/
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/counter.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
@@ -376,6 +377,7 @@ static int ti_eqep_probe(struct platform_device *pdev)
struct counter_device *counter;
struct ti_eqep_cnt *priv;
void __iomem *base;
struct clk *clk;
int err;
counter = devm_counter_alloc(dev, sizeof(*priv));
@@ -415,6 +417,10 @@ 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_add(counter);
if (err < 0) {
pm_runtime_put_sync(dev);