diff options
| author | Harini Katakam <[email protected]> | 2023-07-10 14:37:32 +0200 |
|---|---|---|
| committer | Michal Simek <[email protected]> | 2023-07-21 09:00:38 +0200 |
| commit | 414fc91f4ecbcd00a7d23e33baf39a0e2f6bac96 (patch) | |
| tree | 7e237a951b177903529a10b48c347d6fef3eb92a | |
| parent | 369d04d6430f1cd3678b99be4e0baaee26b865b5 (diff) | |
arm64: zynqmp: Increase reset assert time for TI SGMII PHY
Increase reset assert time for TI SGMII PHY on KR260 CC starting
6.1 kernel. This PHY does not come out of reset with the existing
100us pulse width as per testing on multiple carrier cards. The reset
is driven via a PCA9570 I2C expander. The expander driver was updated
to an upstream version in 6.1 where gpio_chip _set was optimized.
Delays in earlier kernels may have masked this issue. This is a safe
workaround value for assert pulse width before the discussions are
resolved with TI.
Signed-off-by: Harini Katakam <[email protected]>
Reviewed-by: Radhey Shyam Pandey <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
Link: https://lore.kernel.org/r/8fb9f17d43a43ef504c9f29006cd686cce8ac98b.1688992653.git.michal.simek@amd.com
| -rw-r--r-- | arch/arm/dts/zynqmp-sck-kr-g-revA.dts | 2 | ||||
| -rw-r--r-- | arch/arm/dts/zynqmp-sck-kr-g-revB.dts | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts index caaf71d729e..d318773bd9d 100644 --- a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts +++ b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts @@ -210,7 +210,7 @@ ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>; ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; ti,dp83867-rxctrl-strap-quirk; - reset-assert-us = <100>; + reset-assert-us = <300>; reset-deassert-us = <280>; reset-gpios = <&slg7xl45106 5 GPIO_ACTIVE_LOW>; }; diff --git a/arch/arm/dts/zynqmp-sck-kr-g-revB.dts b/arch/arm/dts/zynqmp-sck-kr-g-revB.dts index f9d87559a71..69dba0761b3 100644 --- a/arch/arm/dts/zynqmp-sck-kr-g-revB.dts +++ b/arch/arm/dts/zynqmp-sck-kr-g-revB.dts @@ -210,7 +210,7 @@ ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>; ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; ti,dp83867-rxctrl-strap-quirk; - reset-assert-us = <100>; + reset-assert-us = <300>; reset-deassert-us = <280>; reset-gpios = <&slg7xl45106 5 GPIO_ACTIVE_LOW>; }; |