From 05f86070c0722015520ceb172b22070db5d0aa35 Mon Sep 17 00:00:00 2001 From: Alex Marginean Date: Thu, 14 Nov 2019 18:28:34 +0200 Subject: [PATCH] drivers: net: aquantia: set SMBus addr based on DT property 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 Acked-by: Joe Hershberger --- drivers/net/phy/aquantia.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/phy/aquantia.c b/drivers/net/phy/aquantia.c index 3b036d01c7..3992a97712 100644 --- a/drivers/net/phy/aquantia.c +++ b/drivers/net/phy/aquantia.c @@ -94,6 +94,9 @@ #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 @@ -355,6 +358,18 @@ 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; -- 2.39.5