Using syscon device tree property instead of device data to handle the
NPCM general control registers.
In case the syscon not found the code still search for nuvoton,npcm750-gcr
to support DTS backward compatibility.
Signed-off-by: Tomer Maimon <tmaimon77@xxxxxxxxx>
---
drivers/reset/reset-npcm.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/reset/reset-npcm.c b/drivers/reset/reset-npcm.c
index 2ea4d3136e15..b08f8d8a1d63 100644
--- a/drivers/reset/reset-npcm.c
+++ b/drivers/reset/reset-npcm.c
@@ -138,8 +138,7 @@ static int npcm_reset_xlate(struct reset_controller_dev *rcdev,
}
static const struct of_device_id npcm_rc_match[] = {
- { .compatible = "nuvoton,npcm750-reset",
- .data = (void *)"nuvoton,npcm750-gcr" },
+ { .compatible = "nuvoton,npcm750-reset" },
{ }
};
@@ -160,10 +159,15 @@ static int npcm_usb_reset(struct platform_device *pdev, struct npcm_rc_data *rc)
gcr_dt = (const char *)
of_match_device(dev->driver->of_match_table, dev)->data;
- gcr_regmap = syscon_regmap_lookup_by_compatible(gcr_dt);
+ gcr_regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "nuvoton,sysgcr");
if (IS_ERR(gcr_regmap)) {
- dev_err(&pdev->dev, "Failed to find %s\n", gcr_dt);
- return PTR_ERR(gcr_regmap);
+ dev_warn(&pdev->dev, "Failed to find nuvoton,sysgcr property, please update the device tree\n");
+ dev_info(&pdev->dev, "Using nuvoton,npcm750-gcr for Poleg backward compatibility\n");
+ gcr_regmap = syscon_regmap_lookup_by_compatible("nuvoton,npcm750-gcr");
+ if (IS_ERR(gcr_regmap)) {
+ dev_err(&pdev->dev, "Failed to find nuvoton,npcm750-gcr");
+ return PTR_ERR(gcr_regmap);
+ }
}
/* checking which USB device is enabled */
--
2.33.0
