From: Daniil Gnusarev <gnusarevda@basealt.ru> To: devel-kernel@lists.altlinux.org Subject: [d-kernel] [PATCH 11/39] net: fwnode_get_phy_id: consider all compatible strings Date: Mon, 14 Oct 2024 18:01:52 +0400 Message-ID: <20241014140221.535985-12-gnusarevda@basealt.ru> (raw) In-Reply-To: <20241014140221.535985-1-gnusarevda@basealt.ru> From: Alexey Sheplyakov <asheplyakov@basealt.ru> Commit cf99686072a1b7037a1d782b66037b2b722bf2c9 ("of: mdio: Refactor of_get_phy_id()") has broken Ethernet on TF307 board (and possibly other boards based on Baikal-M/T1 SoCs). That commit replaces `of_get_phy_id` with `fwnode_get_phy_id`. And `fwnode_get_phy_id` considers only the 1st compatible string to find out phy_id. This works well for all schema compliant device trees, since the `compatible` property of PHY nodes is supposed to be "ethernet-phy-idNNNN.MMMM". However DTB embedded in TF307 firmware describes PHY like this: gmac0_phy: ethernet-phy@3 { compatible = "micrel,ksz9031", "ethernet-phy-id0022.1620", "ethernet-phy-ieee802.3-c22"; reg = <0x3>; }; That is, the 1st compatible string is "micrel,ksz9031". Thus `fwnode_get_phy_id` is unable to parse phy_id, and `stmmac_mdio_register` fails. As a result Ethernet driver is unable to attach to PHY, and can't send/receive anything. To avoid the problem this patch adjusts `fwnode_get_phy_id` to consider *all* compatible strings. Signed-off-by: Alexey Sheplyakov <asheplyakov@basealt.ru> X-DONTUPSTREAM X-feature-Baikal-M --- drivers/net/phy/phy_device.c | 41 ++++++++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 11 deletions(-) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 2e4bff6055e22..5b13f5692830e 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -908,18 +908,37 @@ static int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id) int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id) { unsigned int upper, lower; - const char *cp; - int ret; - - ret = fwnode_property_read_string(fwnode, "compatible", &cp); - if (ret) - return ret; - - if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) != 2) - return -EINVAL; + const char **compat; + int ret, count, i; + + /* FIXME: where is fwnode_property_for_each_string? */ + count = fwnode_property_read_string_array(fwnode, "compatible", NULL, 0); + if (count < 0) + return count; + else if (count == 0) + return -ENODATA; + + compat = kcalloc(count, sizeof(*compat), GFP_KERNEL); + if (!compat) + return -ENOMEM; + ret = fwnode_property_read_string_array(fwnode, "compatible", compat, count); + if (ret < 0) + goto out; - *phy_id = ((upper & GENMASK(15, 0)) << 16) | (lower & GENMASK(15, 0)); - return 0; + ret = -EINVAL; + for (i = 0; i < count; i++) { + pr_info("%s: considering '%s'\n", __func__, compat[i]); + if (sscanf(compat[i], "ethernet-phy-id%4x.%4x", &upper, &lower) != 2) + continue; + else { + *phy_id = ((upper & GENMASK(15, 0)) << 16) | (lower & GENMASK(15, 0)); + ret = 0; + break; + } + } +out: + kfree(compat); + return ret; } EXPORT_SYMBOL(fwnode_get_phy_id); -- 2.42.2
next prev parent reply other threads:[~2024-10-14 14:01 UTC|newest] Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-10-14 14:01 [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 01/39] Baikal Electronics SoC family Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 02/39] Clk: Add clock drivers for Baikal BE-M1000 with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 03/39] USB: Add support for Baikal USB PHY Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 04/39] PCI: Add support for PCIe controller for Baikal BE-M1000 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 05/39] AHCI SATA: Add support " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 06/39] UART: Add support for UART " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 07/39] cpufreq-dt: don't load on Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 08/39] Sound: add support for Baikal BE-M1000 I2S Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 09/39] sound: baikal-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 10/39] net: stmmac: support of Baikal-BE1000 SoCs GMAC Daniil Gnusarev 2024-10-14 14:01 ` Daniil Gnusarev [this message] 2024-10-14 14:01 ` [d-kernel] [PATCH 12/39] hwmon: bt1-pvt: access registers via pvt_{readl, writel} helpers Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 13/39] hwmon: bt1-pvt: define pvt_readl/pvt_writel for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 14/39] hwmon: bt1-pvt: adjusted probing " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 15/39] hwmon: bt1-pvt: added compatible baikal, pvt Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 16/39] PVT: support register addressing with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 17/39] drm: add Baikal-M SoC video display unit driver Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 18/39] drm/bridge: dw-hdmi: support ahb audio hw revision 0x2a Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 19/39] dt-bindings: dw-hdmi: added ahb-audio-regshift Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 20/39] drm/bridge: dw-hdmi: force ahb audio register offset for Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 21/39] drm/panfrost: forcibly set dma-coherent on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 22/39] drm/panfrost: disable devfreq " Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 23/39] bmc: add board management controller driver Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 24/39] pm: disable all sleep states on Baikal-M based boards Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 25/39] sound: dwc-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 26/39] sound: dwc-i2s: request all IRQs specified in device tree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 27/39] usb: dwc3: of-simple: added compatible string for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 28/39] serial: 8250_dw: verify clock rate in dw8250_set_termios Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 29/39] clk: use "cmu-id" if there is no "reg" in devicetree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 30/39] pci: baikal-pcie: driver compatibility with SDK earlier than 5.7 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 31/39] pci: baikal-pcie: driver compatibility with SDK versions 5.4 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 32/39] dw-pcie: refuse to load on Baikal-M with recent firmware Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 33/39] drm: baikal-vdu: driver compatibility with SDK earlier than 5.9 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 34/39] input: new driver - serdev-serio Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 35/39] input: added TF307 serio PS/2 emulator driver Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 36/39] input: tp_serio: catch up API changes Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 37/39] drm: baikal-m: add vblank events, fix mode switching Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 38/39] drm: baikal-vdu: disable backlight driver loading Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 39/39] config-aarch64: enable more configs for baikal-m support Daniil Gnusarev 2024-10-14 14:28 ` [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Vitaly Chikunov
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