From mboxrd@z Thu Jan 1 00:00:00 1970 From: Padmarao Begari Date: Tue, 12 Jan 2021 13:22:31 +0530 Subject: [PATCH v8 3/7] net: macb: Add phy address to read it from device tree In-Reply-To: <20210112075235.7692-1-padmarao.begari@microchip.com> References: <20210112075235.7692-1-padmarao.begari@microchip.com> Message-ID: <20210112075235.7692-4-padmarao.begari@microchip.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Read phy address from device tree and use it to find the phy device if not found then search in the range of 0 to 31. Signed-off-by: Padmarao Begari Reviewed-by: Anup Patel Reviewed-by: Bin Meng Tested-by: Bin Meng --- drivers/net/macb.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 0c2ac811fb..2225b33ff6 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -531,6 +531,12 @@ static int macb_phy_find(struct macb_device *macb, const char *name) int i; u16 phy_id; + phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1); + if (phy_id != 0xffff) { + printf("%s: PHY present at %d\n", name, macb->phy_addr); + return 0; + } + /* Search for PHY... */ for (i = 0; i < 32; i++) { macb->phy_addr = i; @@ -1311,6 +1317,7 @@ static int macb_eth_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_plat(dev); struct macb_device *macb = dev_get_priv(dev); + struct ofnode_phandle_args phandle_args; const char *phy_mode; int ret; @@ -1323,6 +1330,12 @@ static int macb_eth_probe(struct udevice *dev) return -EINVAL; } + /* Read phyaddr from DT */ + if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0, + &phandle_args)) + macb->phy_addr = ofnode_read_u32_default(phandle_args.node, + "reg", -1); + macb->regs = (void *)pdata->iobase; macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678); -- 2.17.1