[U-Boot] [PATCH 1/2] net: phy: introduce a quirk PHY_BROKEN_RESET
From: Shaohui Xie Shaohui.Xie@nxp.com
Current driver always performs a phy soft reset when connecting the phy device, but soft reset is not always supported by a phy device, so introduce a quirk PHY_BROKEN_RESET to let such a phy device to skip soft reset. This commit uses 'flags' of phy device structure to store the quirk.
Signed-off-by: Shaohui Xie Shaohui.Xie@nxp.com --- drivers/net/phy/phy.c | 3 +++ include/phy.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 51b5746..2a36ae7 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -707,6 +707,9 @@ int phy_reset(struct phy_device *phydev) int timeout = 500; int devad = MDIO_DEVAD_NONE;
+ if (phydev->flags == PHY_BROKEN_RESET) + return 0; + #ifdef CONFIG_PHYLIB_10G /* If it's 10G, we need to issue reset through one of the MMDs */ if (is_10g_interface(phydev->interface)) { diff --git a/include/phy.h b/include/phy.h index 66cf61b..5f604a1 100644 --- a/include/phy.h +++ b/include/phy.h @@ -16,6 +16,7 @@ #include <linux/mdio.h>
#define PHY_MAX_ADDR 32 +#define PHY_BROKEN_RESET (1 << 0) /* soft reset not supported */
#define PHY_BASIC_FEATURES (SUPPORTED_10baseT_Half | \ SUPPORTED_10baseT_Full | \
On Tue, Jan 12, 2016 at 3:55 AM, shh.xie@gmail.com wrote:
From: Shaohui Xie Shaohui.Xie@nxp.com
Current driver always performs a phy soft reset when connecting the phy device, but soft reset is not always supported by a phy device, so introduce a quirk PHY_BROKEN_RESET to let such a phy device to skip soft reset. This commit uses 'flags' of phy device structure to store the quirk.
Signed-off-by: Shaohui Xie Shaohui.Xie@nxp.com
drivers/net/phy/phy.c | 3 +++ include/phy.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 51b5746..2a36ae7 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -707,6 +707,9 @@ int phy_reset(struct phy_device *phydev) int timeout = 500; int devad = MDIO_DEVAD_NONE;
if (phydev->flags == PHY_BROKEN_RESET)
Please mask off this bit so this test still work if someone adds a different flag.
E.g.: if (phydev->flags & PHY_BROKEN_RESET)
return 0;#ifdef CONFIG_PHYLIB_10G /* If it's 10G, we need to issue reset through one of the MMDs */ if (is_10g_interface(phydev->interface)) { diff --git a/include/phy.h b/include/phy.h index 66cf61b..5f604a1 100644 --- a/include/phy.h +++ b/include/phy.h @@ -16,6 +16,7 @@ #include <linux/mdio.h>
#define PHY_MAX_ADDR 32 +#define PHY_BROKEN_RESET (1 << 0) /* soft reset not supported */
Please name this something like PHY_FLAG_BROKEN_RESET.
#define PHY_BASIC_FEATURES (SUPPORTED_10baseT_Half | \ SUPPORTED_10baseT_Full | \ -- 2.1.0.27.g96db324
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-----Original Message----- From: Joe Hershberger [mailto:joe.hershberger@gmail.com] Sent: Wednesday, January 27, 2016 11:37 PM To: shaohui 谢 shh.xie@gmail.com Cc: u-boot u-boot@lists.denx.de; Joe Hershberger joe.hershberger@ni.com; Shaohui Xie shaohui.xie@nxp.com; York Sun yorksun@freescale.com Subject: Re: [U-Boot] [PATCH 1/2] net: phy: introduce a quirk PHY_BROKEN_RESET
On Tue, Jan 12, 2016 at 3:55 AM, shh.xie@gmail.com wrote:
From: Shaohui Xie Shaohui.Xie@nxp.com
Current driver always performs a phy soft reset when connecting the phy device, but soft reset is not always supported by a phy device, so introduce a quirk PHY_BROKEN_RESET to let such a phy device to skip soft reset. This commit uses 'flags' of phy device structure to store the quirk.
Signed-off-by: Shaohui Xie Shaohui.Xie@nxp.com
drivers/net/phy/phy.c | 3 +++ include/phy.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 51b5746..2a36ae7 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -707,6 +707,9 @@ int phy_reset(struct phy_device *phydev) int timeout = 500; int devad = MDIO_DEVAD_NONE;
if (phydev->flags == PHY_BROKEN_RESET)Please mask off this bit so this test still work if someone adds a different flag.
E.g.: if (phydev->flags & PHY_BROKEN_RESET)
[S.H] OK. Will fix it.
return 0;#ifdef CONFIG_PHYLIB_10G /* If it's 10G, we need to issue reset through one of the MMDs */ if (is_10g_interface(phydev->interface)) { diff --git a/include/phy.h b/include/phy.h index 66cf61b..5f604a1 100644 --- a/include/phy.h +++ b/include/phy.h @@ -16,6 +16,7 @@ #include <linux/mdio.h>
#define PHY_MAX_ADDR 32 +#define PHY_BROKEN_RESET (1 << 0) /* soft reset not supported */
Please name this something like PHY_FLAG_BROKEN_RESET.
[S.H] OK. Will do.
Thank you! Shaohui
#define PHY_BASIC_FEATURES (SUPPORTED_10baseT_Half | \ SUPPORTED_10baseT_Full | \ -- 2.1.0.27.g96db324
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