The delay is especially needed by the xRX300 and xRX330 SoCs. Without
this patch, some phys are sometimes not properly detected.
The patch was tested on BT Home Hub 5A and D-Link DWR-966.
Fixes: a09d042b0862 ("net: dsa: lantiq: allow to use all GPHYs on xRX300 and xRX330")
Signed-off-by: Aleksander Jan Bajkowski <[email protected]>
Signed-off-by: Martin Blumenstingl <[email protected]>
---
drivers/net/dsa/lantiq_gswip.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 64d6dfa83122..267324889dd6 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1885,6 +1885,12 @@ static int gswip_gphy_fw_load(struct gswip_priv *priv, struct gswip_gphy_fw *gph
reset_control_assert(gphy_fw->reset);
+ /* The vendor BSP uses a 200ms delay after asserting the reset line.
+ * Without this some users are observing that the PHY is not coming up
+ * on the MDIO bus.
+ */
+ msleep(200);
+
ret = request_firmware(&fw, gphy_fw->fw_name, dev);
if (ret) {
dev_err(dev, "failed to load firmware: %s, error: %i\n",
--
2.30.2
On 9/12/21 1:58 PM, Aleksander Jan Bajkowski wrote:
> The delay is especially needed by the xRX300 and xRX330 SoCs. Without
> this patch, some phys are sometimes not properly detected.
>
> The patch was tested on BT Home Hub 5A and D-Link DWR-966.
>
> Fixes: a09d042b0862 ("net: dsa: lantiq: allow to use all GPHYs on xRX300 and xRX330")
> Signed-off-by: Aleksander Jan Bajkowski <[email protected]>
> Signed-off-by: Martin Blumenstingl <[email protected]>
Acked-by: Hauke Mehrtens <[email protected]>
> ---
> drivers/net/dsa/lantiq_gswip.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
> index 64d6dfa83122..267324889dd6 100644
> --- a/drivers/net/dsa/lantiq_gswip.c
> +++ b/drivers/net/dsa/lantiq_gswip.c
> @@ -1885,6 +1885,12 @@ static int gswip_gphy_fw_load(struct gswip_priv *priv, struct gswip_gphy_fw *gph
>
> reset_control_assert(gphy_fw->reset);
>
> + /* The vendor BSP uses a 200ms delay after asserting the reset line.
> + * Without this some users are observing that the PHY is not coming up
> + * on the MDIO bus.
> + */
> + msleep(200);
> +
> ret = request_firmware(&fw, gphy_fw->fw_name, dev);
> if (ret) {
> dev_err(dev, "failed to load firmware: %s, error: %i\n",
>
Hello:
This patch was applied to netdev/net.git (refs/heads/master):
On Sun, 12 Sep 2021 13:58:07 +0200 you wrote:
> The delay is especially needed by the xRX300 and xRX330 SoCs. Without
> this patch, some phys are sometimes not properly detected.
>
> The patch was tested on BT Home Hub 5A and D-Link DWR-966.
>
> Fixes: a09d042b0862 ("net: dsa: lantiq: allow to use all GPHYs on xRX300 and xRX330")
> Signed-off-by: Aleksander Jan Bajkowski <[email protected]>
> Signed-off-by: Martin Blumenstingl <[email protected]>
>
> [...]
Here is the summary with links:
- [net,v2] net: dsa: lantiq_gswip: Add 200ms assert delay
https://git.kernel.org/netdev/net/c/111b64e35ea0
You are awesome, thank you!
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