Commit 611fbca1 authored by Jerome Brunet's avatar Jerome Brunet Committed by Greg Kroah-Hartman

nvmem: meson-efuse: add peripheral clock

Get and enable the peripheral clock required by the efuse device.
The driver has been handle to work without it so far because the
clock was left enabled by default but it won't be the case soon.
Signed-off-by: default avatarJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a91ae340
......@@ -14,6 +14,7 @@
* more details.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/nvmem-provider.h>
#include <linux/of.h>
......@@ -46,7 +47,31 @@ static int meson_efuse_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct nvmem_device *nvmem;
struct nvmem_config *econfig;
struct clk *clk;
unsigned int size;
int ret;
clk = devm_clk_get(dev, NULL);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
if (ret != -EPROBE_DEFER)
dev_err(dev, "failed to get efuse gate");
return ret;
}
ret = clk_prepare_enable(clk);
if (ret) {
dev_err(dev, "failed to enable gate");
return ret;
}
ret = devm_add_action_or_reset(dev,
(void(*)(void *))clk_disable_unprepare,
clk);
if (ret) {
dev_err(dev, "failed to add disable callback");
return ret;
}
if (meson_sm_call(SM_EFUSE_USER_MAX, &size, 0, 0, 0, 0, 0) < 0) {
dev_err(dev, "failed to get max user");
......
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