[PATCH v8 26/34] soc/tegra: fuse: Add OPP support

Dmitry Osipenko
2021-08-17T01:30:55Z

Initialize and sync FUSE OPP to set up SoC core voltage vote needed by
FUSE hardware.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/soc/tegra/fuse/fuse-tegra.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index f2151815db58..d1b66cd9339d 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -13,6 +13,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
@@ -213,6 +214,10 @@ static int tegra_fuse_probe(struct platform_device *pdev)

pm_runtime_enable(&pdev->dev);

+ err = devm_tegra_core_dev_init_opp_table_simple(&pdev->dev);
+ if (err)
+ goto restore;
+
if (fuse->soc->probe) {
err = fuse->soc->probe(fuse);
if (err < 0)
@@ -259,6 +264,12 @@ static int __maybe_unused tegra_fuse_runtime_resume(struct device *dev)
{
int err;

+ err = dev_pm_opp_sync(dev);
+ if (err) {
+ dev_err(dev, "failed to sync OPP: %d\n", err);
+ return err;
+ }
+
err = clk_prepare_enable(fuse->clk);
if (err < 0) {
dev_err(dev, "failed to enable FUSE clock: %d\n", err);
--
2.32.0