@@ -11,6 +11,7 @@
* warranty of any kind, whether express or implied.
*/
+#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_address.h>
@@ -46,6 +47,7 @@ enum reset_type {
};
static void __iomem *at91_ramc_base[2], *at91_rstc_base;
+static struct clk *sclk;
/*
* unless the SDRAM is cleanly shutdown before we hit the
@@ -199,6 +201,15 @@ static int at91_reset_probe(struct platform_device *pdev)
{
int ret;
+ sclk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(sclk))
+ return PTR_ERR(sclk);
+
+ ret = clk_prepare_enable(sclk);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not enable slow clock\n");
+ return ret;
+ }
ret = at91_reset_of_probe(pdev);
if (ret)
Commit dca1a4b5ff6e ("clk: at91: keep slow clk enabled to prevent system hang") added a workaround for the slow clock as it is not properly handled by its users. Get and use the slow clock as it is necessary for the at91 reset controller. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- Cc: Sebastian Reichel <sre@kernel.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: linux-pm@vger.kernel.org drivers/power/reset/at91-reset.c | 11 +++++++++++ 1 file changed, 11 insertions(+)