[PATCH v2 02/25] phy: cadence: Sierra: Fix PHY power_on sequence
Aswath Govindraju
a-govindraju at ti.com
Fri Jan 28 09:11:29 CET 2022
From: Kishon Vijay Abraham I <kishon at ti.com>
Commit 39b823381d9d ("phy: cadence: Add driver for Sierra PHY")
de-asserts PHY_RESET even before the configurations are loaded in
phy_init(). However PHY_RESET should be de-asserted only after
all the configurations has been initialized, instead of de-asserting
in probe. Fix it here.
Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju at ti.com>
---
drivers/phy/cadence/phy-cadence-sierra.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index 6b26b30dcf9d..bd42145fcacc 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -296,6 +296,12 @@ static int cdns_sierra_phy_on(struct phy *gphy)
u32 val;
int ret;
+ ret = reset_control_deassert(sp->phy_rst);
+ if (ret) {
+ dev_err(dev, "Failed to take the PHY out of reset\n");
+ return ret;
+ }
+
/* Take the PHY lane group out of reset */
ret = reset_deassert_bulk(ins->lnk_rst);
if (ret) {
@@ -544,7 +550,6 @@ static int cdns_sierra_phy_probe(struct udevice *dev)
if (!sp->autoconf && sp->nsubnodes > 1)
regmap_field_write(sp->phy_pll_cfg_1, 0x1);
- reset_control_deassert(sp->phy_rst);
dev_info(dev, "sierra probed\n");
return 0;
--
2.17.1
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