* [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
@ 2021-08-18 8:43 ` Piyush Mehta
0 siblings, 0 replies; 6+ messages in thread
From: Piyush Mehta @ 2021-08-18 8:43 UTC (permalink / raw
To: laurent.pinchart, kishon, vkoul, michal.simek, linux-phy
Cc: linux-kernel, linux-arm-kernel, git, sgoud, Piyush Mehta
PHY initialization for USB is required on linux boot or when
gt lane is changed from the current one and it is applicable
on PLL lock too.
Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
---
drivers/phy/xilinx/phy-zynqmp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 35652152ce5d..f478d8a17115 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -626,6 +626,9 @@ static int xpsgtr_phy_power_on(struct phy *phy)
struct xpsgtr_phy *gtr_phy = phy_get_drvdata(phy);
int ret = 0;
+ /* Skip initialization if not required. */
+ if (!xpsgtr_phy_init_required(gtr_phy))
+ return ret;
/*
* Wait for the PLL to lock. For DP, only wait on DP0 to avoid
* cumulating waits for both lanes. The user is expected to initialize
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
@ 2021-08-18 8:43 ` Piyush Mehta
0 siblings, 0 replies; 6+ messages in thread
From: Piyush Mehta @ 2021-08-18 8:43 UTC (permalink / raw
To: laurent.pinchart, kishon, vkoul, michal.simek, linux-phy
Cc: linux-kernel, linux-arm-kernel, git, sgoud, Piyush Mehta
PHY initialization for USB is required on linux boot or when
gt lane is changed from the current one and it is applicable
on PLL lock too.
Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
---
drivers/phy/xilinx/phy-zynqmp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 35652152ce5d..f478d8a17115 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -626,6 +626,9 @@ static int xpsgtr_phy_power_on(struct phy *phy)
struct xpsgtr_phy *gtr_phy = phy_get_drvdata(phy);
int ret = 0;
+ /* Skip initialization if not required. */
+ if (!xpsgtr_phy_init_required(gtr_phy))
+ return ret;
/*
* Wait for the PLL to lock. For DP, only wait on DP0 to avoid
* cumulating waits for both lanes. The user is expected to initialize
--
2.25.1
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
@ 2021-08-18 8:43 ` Piyush Mehta
0 siblings, 0 replies; 6+ messages in thread
From: Piyush Mehta @ 2021-08-18 8:43 UTC (permalink / raw
To: laurent.pinchart, kishon, vkoul, michal.simek, linux-phy
Cc: linux-kernel, linux-arm-kernel, git, sgoud, Piyush Mehta
PHY initialization for USB is required on linux boot or when
gt lane is changed from the current one and it is applicable
on PLL lock too.
Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com>
---
drivers/phy/xilinx/phy-zynqmp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 35652152ce5d..f478d8a17115 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -626,6 +626,9 @@ static int xpsgtr_phy_power_on(struct phy *phy)
struct xpsgtr_phy *gtr_phy = phy_get_drvdata(phy);
int ret = 0;
+ /* Skip initialization if not required. */
+ if (!xpsgtr_phy_init_required(gtr_phy))
+ return ret;
/*
* Wait for the PLL to lock. For DP, only wait on DP0 to avoid
* cumulating waits for both lanes. The user is expected to initialize
--
2.25.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
2021-08-18 8:43 ` Piyush Mehta
(?)
@ 2021-08-18 10:14 ` Vinod Koul
-1 siblings, 0 replies; 6+ messages in thread
From: Vinod Koul @ 2021-08-18 10:14 UTC (permalink / raw
To: Piyush Mehta
Cc: laurent.pinchart, kishon, michal.simek, linux-phy, linux-kernel,
linux-arm-kernel, git, sgoud
On 18-08-21, 14:13, Piyush Mehta wrote:
> PHY initialization for USB is required on linux boot or when
> gt lane is changed from the current one and it is applicable
> on PLL lock too.
Applied, thanks
--
~Vinod
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
@ 2021-08-18 10:14 ` Vinod Koul
0 siblings, 0 replies; 6+ messages in thread
From: Vinod Koul @ 2021-08-18 10:14 UTC (permalink / raw
To: Piyush Mehta
Cc: laurent.pinchart, kishon, michal.simek, linux-phy, linux-kernel,
linux-arm-kernel, git, sgoud
On 18-08-21, 14:13, Piyush Mehta wrote:
> PHY initialization for USB is required on linux boot or when
> gt lane is changed from the current one and it is applicable
> on PLL lock too.
Applied, thanks
--
~Vinod
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
@ 2021-08-18 10:14 ` Vinod Koul
0 siblings, 0 replies; 6+ messages in thread
From: Vinod Koul @ 2021-08-18 10:14 UTC (permalink / raw
To: Piyush Mehta
Cc: laurent.pinchart, kishon, michal.simek, linux-phy, linux-kernel,
linux-arm-kernel, git, sgoud
On 18-08-21, 14:13, Piyush Mehta wrote:
> PHY initialization for USB is required on linux boot or when
> gt lane is changed from the current one and it is applicable
> on PLL lock too.
Applied, thanks
--
~Vinod
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-08-18 10:16 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2021-08-18 8:43 [PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB Piyush Mehta
2021-08-18 8:43 ` Piyush Mehta
2021-08-18 8:43 ` Piyush Mehta
2021-08-18 10:14 ` Vinod Koul
2021-08-18 10:14 ` Vinod Koul
2021-08-18 10:14 ` Vinod Koul
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