diff mbox series

[U-Boot,v2,07/11] drivers: net: aquantia: set SMBus addr based on DT property

Message ID 20190812131521.28556-8-alexandru.marginean@nxp.com
State Superseded
Delegated to: Joe Hershberger
Headers show
Series Aquantia PHY driver updates to reduce FW dependency | expand

Commit Message

Alexandru Marginean Aug. 12, 2019, 1:15 p.m. UTC 
Aquantia PHYs have a SMBus interface mostly used for debug.  The addresses
on this interface are normally set up by PHY firmware, but depending on the
board they may end up not being unique.  Add an optional DT property used
to change SMBus address if needed.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
---
 drivers/net/phy/aquantia.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/phy/aquantia.c b/drivers/net/phy/aquantia.c
index 1f3f4ccca1..8a3df692d1 100644
--- a/drivers/net/phy/aquantia.c
+++ b/drivers/net/phy/aquantia.c
@@ -91,6 +91,9 @@ 
 #define AQUANTIA_VND1_GSYSCFG_5G		3
 #define AQUANTIA_VND1_GSYSCFG_10G		4
 
+#define AQUANTIA_VND1_SMBUS0			0xc485
+#define AQUANTIA_VND1_SMBUS1			0xc495
+
 /* addresses of memory segments in the phy */
 #define DRAM_BASE_ADDR 0x3FFE0000
 #define IRAM_BASE_ADDR 0x40000000
@@ -356,6 +359,18 @@  static int aquantia_dts_config(struct phy_device *phydev)
 		phy_write(phydev, MDIO_MMD_PMAPMD, AQUANTIA_PMA_RX_VENDOR_P1,
 			  reg);
 	}
+	if (!ofnode_read_u32(node, "smb-addr", &prop)) {
+		debug("smb-addr = %x\n", (int)prop);
+		/*
+		 * there are two addresses here, normally just one bus would
+		 * be in use so we're setting both regs using the same DT
+		 * property.
+		 */
+		phy_write(phydev, MDIO_MMD_VEND1, AQUANTIA_VND1_SMBUS0,
+			  (u16)(prop << 1));
+		phy_write(phydev, MDIO_MMD_VEND1, AQUANTIA_VND1_SMBUS1,
+			  (u16)(prop << 1));
+	}
 
 #endif
 	return 0;