diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/745-net-mdio-i2c-add-support-for-Clause-45-accesses.patch')
-rw-r--r-- | target/linux/generic/pending-5.4/745-net-mdio-i2c-add-support-for-Clause-45-accesses.patch | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/target/linux/generic/pending-5.4/745-net-mdio-i2c-add-support-for-Clause-45-accesses.patch b/target/linux/generic/pending-5.4/745-net-mdio-i2c-add-support-for-Clause-45-accesses.patch deleted file mode 100644 index 761a94b3d4..0000000000 --- a/target/linux/generic/pending-5.4/745-net-mdio-i2c-add-support-for-Clause-45-accesses.patch +++ /dev/null @@ -1,74 +0,0 @@ -From c9de73988a35c6c85810a992954ac568cca503e5 Mon Sep 17 00:00:00 2001 -From: Russell King <rmk+kernel@armlinux.org.uk> -Date: Wed, 2 Oct 2019 10:31:10 +0100 -Subject: [PATCH 648/660] net: mdio-i2c: add support for Clause 45 accesses - -Some SFP+ modules have PHYs on them just like SFP modules do, except -they are Clause 45 PHYs. The I2C protocol used to access them is -modified slightly in order to send the device address and 16-bit -register index. - -Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> ---- - drivers/net/phy/mdio-i2c.c | 28 ++++++++++++++++++++-------- - 1 file changed, 20 insertions(+), 8 deletions(-) - ---- a/drivers/net/phy/mdio-i2c.c -+++ b/drivers/net/phy/mdio-i2c.c -@@ -33,17 +33,24 @@ static int i2c_mii_read(struct mii_bus * - { - struct i2c_adapter *i2c = bus->priv; - struct i2c_msg msgs[2]; -- u8 data[2], dev_addr = reg; -+ u8 addr[3], data[2], *p; - int bus_addr, ret; - - if (!i2c_mii_valid_phy_id(phy_id)) - return 0xffff; - -+ p = addr; -+ if (reg & MII_ADDR_C45) { -+ *p++ = 0x20 | ((reg >> 16) & 31); -+ *p++ = reg >> 8; -+ } -+ *p++ = reg; -+ - bus_addr = i2c_mii_phy_addr(phy_id); - msgs[0].addr = bus_addr; - msgs[0].flags = 0; -- msgs[0].len = 1; -- msgs[0].buf = &dev_addr; -+ msgs[0].len = p - addr; -+ msgs[0].buf = addr; - msgs[1].addr = bus_addr; - msgs[1].flags = I2C_M_RD; - msgs[1].len = sizeof(data); -@@ -61,18 +68,23 @@ static int i2c_mii_write(struct mii_bus - struct i2c_adapter *i2c = bus->priv; - struct i2c_msg msg; - int ret; -- u8 data[3]; -+ u8 data[5], *p; - - if (!i2c_mii_valid_phy_id(phy_id)) - return 0; - -- data[0] = reg; -- data[1] = val >> 8; -- data[2] = val; -+ p = data; -+ if (reg & MII_ADDR_C45) { -+ *p++ = (reg >> 16) & 31; -+ *p++ = reg >> 8; -+ } -+ *p++ = reg; -+ *p++ = val >> 8; -+ *p++ = val; - - msg.addr = i2c_mii_phy_addr(phy_id); - msg.flags = 0; -- msg.len = 3; -+ msg.len = p - data; - msg.buf = data; - - ret = i2c_transfer(i2c, &msg, 1); |