From: Marek Behún Date: Wed, 6 Apr 2022 22:32:57 +0000 (+0200) Subject: net: introduce helpers to get PHY ofnode from MAC X-Git-Tag: v2022.07~100^2~35 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f3dd213e151ece2a382e730f5e75156536b2419d;p=platform%2Fkernel%2Fu-boot.git net: introduce helpers to get PHY ofnode from MAC Add helpers ofnode_get_phy_node() and dev_get_phy_node() and use it in net/mdio-uclass.c function dm_eth_connect_phy_handle(). Also add corresponding UT test. This is useful because other part's of U-Boot may want to get PHY ofnode without connecting a PHY. Signed-off-by: Marek Behún Reviewed-by: Ramon Fried Reviewed-by: Simon Glass --- diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 05c1cd5..e536943 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -530,6 +530,13 @@ fake-host-hwaddr = [00 00 66 44 22 22]; }; + phy_eth0: phy-test-eth { + compatible = "sandbox,eth"; + reg = <0x10007000 0x1000>; + fake-host-hwaddr = [00 00 66 44 22 77]; + phy-handle = <ðphy1>; + }; + dsa_eth0: dsa-test-eth { compatible = "sandbox,eth"; reg = <0x10006000 0x1000>; @@ -1555,6 +1562,12 @@ mdio: mdio-test { compatible = "sandbox,mdio"; + #address-cells = <1>; + #size-cells = <0>; + + ethphy1: ethernet-phy@1 { + reg = <1>; + }; }; pm-bus-test { diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 8042847..445b7ad 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -1198,3 +1198,24 @@ const char *ofnode_conf_read_str(const char *prop_name) return ofnode_read_string(node, prop_name); } + +ofnode ofnode_get_phy_node(ofnode node) +{ + /* DT node properties that reference a PHY node */ + static const char * const phy_handle_str[] = { + "phy-handle", "phy", "phy-device", + }; + struct ofnode_phandle_args args = { + .node = ofnode_null() + }; + int i; + + assert(ofnode_valid(node)); + + for (i = 0; i < ARRAY_SIZE(phy_handle_str); i++) + if (!ofnode_parse_phandle_with_args(node, phy_handle_str[i], + NULL, 0, 0, &args)) + break; + + return args.node; +} diff --git a/drivers/core/read.c b/drivers/core/read.c index 31f9e78..7ff1002 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -398,3 +398,8 @@ int dev_decode_display_timing(const struct udevice *dev, int index, { return ofnode_decode_display_timing(dev_ofnode(dev), index, config); } + +ofnode dev_get_phy_node(const struct udevice *dev) +{ + return ofnode_get_phy_node(dev_ofnode(dev)); +} diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index 744dffe..429aee2 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -1217,4 +1217,18 @@ int ofnode_conf_read_int(const char *prop_name, int default_val); */ const char *ofnode_conf_read_str(const char *prop_name); +/** + * ofnode_get_phy_node() - Get PHY node for a MAC (if not fixed-link) + * + * This function parses PHY handle from the Ethernet controller's ofnode + * (trying all possible PHY handle property names), and returns the PHY ofnode. + * + * Before this is used, ofnode_phy_is_fixed_link() should be checked first, and + * if the result to that is true, this function should not be called. + * + * @eth_node: ofnode belonging to the Ethernet controller + * Return: ofnode of the PHY, if it exists, otherwise an invalid ofnode + */ +ofnode ofnode_get_phy_node(ofnode eth_node); + #endif diff --git a/include/dm/read.h b/include/dm/read.h index 233af3c..899eb81 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -743,6 +743,20 @@ int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res); int dev_decode_display_timing(const struct udevice *dev, int index, struct display_timing *config); +/** + * dev_get_phy_node() - Get PHY node for a MAC (if not fixed-link) + * + * This function parses PHY handle from the Ethernet controller's ofnode + * (trying all possible PHY handle property names), and returns the PHY ofnode. + * + * Before this is used, ofnode_phy_is_fixed_link() should be checked first, and + * if the result to that is true, this function should not be called. + * + * @dev: device representing the MAC + * Return: ofnode of the PHY, if it exists, otherwise an invalid ofnode + */ +ofnode dev_get_phy_node(const struct udevice *dev); + #else /* CONFIG_DM_DEV_READ_INLINE is enabled */ #include @@ -1092,6 +1106,11 @@ static inline int dev_decode_display_timing(const struct udevice *dev, return ofnode_decode_display_timing(dev_ofnode(dev), index, config); } +static inline ofnode dev_get_phy_node(const struct udevice *dev) +{ + return ofnode_get_phy_node(dev_ofnode(dev)); +} + #endif /* CONFIG_DM_DEV_READ_INLINE */ /** diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c index 649dc60..233b701 100644 --- a/net/mdio-uclass.c +++ b/net/mdio-uclass.c @@ -20,11 +20,6 @@ static const char * const phy_mode_str[] = { "phy-mode", "phy-connection-type" }; -/* DT node properties that reference a PHY node */ -static const char * const phy_handle_str[] = { - "phy-handle", "phy", "phy-device" -}; - void dm_mdio_probe_devices(void) { struct udevice *it; @@ -137,23 +132,16 @@ static struct phy_device *dm_eth_connect_phy_handle(struct udevice *ethdev, u32 phy_addr; struct udevice *mdiodev; struct phy_device *phy; - struct ofnode_phandle_args phandle = {.node = ofnode_null()}; ofnode phynode; - int i; if (CONFIG_IS_ENABLED(PHY_FIXED) && ofnode_phy_is_fixed_link(dev_ofnode(ethdev), &phynode)) { phy = phy_connect(NULL, 0, ethdev, interface); - phandle.node = phynode; goto out; } - for (i = 0; i < ARRAY_SIZE(phy_handle_str); i++) - if (!dev_read_phandle_with_args(ethdev, phy_handle_str[i], NULL, - 0, 0, &phandle)) - break; - - if (!ofnode_valid(phandle.node)) { + phynode = dev_get_phy_node(ethdev); + if (!ofnode_valid(phynode)) { dev_dbg(ethdev, "can't find PHY node\n"); return NULL; } @@ -162,16 +150,16 @@ static struct phy_device *dm_eth_connect_phy_handle(struct udevice *ethdev, * reading 'reg' directly should be fine. This is a PHY node, the * address is always size 1 and requires no translation */ - if (ofnode_read_u32(phandle.node, "reg", &phy_addr)) { + if (ofnode_read_u32(phynode, "reg", &phy_addr)) { dev_dbg(ethdev, "missing reg property in phy node\n"); return NULL; } if (uclass_get_device_by_ofnode(UCLASS_MDIO, - ofnode_get_parent(phandle.node), + ofnode_get_parent(phynode), &mdiodev)) { dev_dbg(ethdev, "can't find MDIO bus for node %s\n", - ofnode_get_name(ofnode_get_parent(phandle.node))); + ofnode_get_name(ofnode_get_parent(phynode))); return NULL; } @@ -179,7 +167,7 @@ static struct phy_device *dm_eth_connect_phy_handle(struct udevice *ethdev, out: if (phy) - phy->node = phandle.node; + phy->node = phynode; return phy; } diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c index dab0480..500c63a 100644 --- a/test/dm/ofnode.c +++ b/test/dm/ofnode.c @@ -447,3 +447,21 @@ static int dm_test_ofnode_string_err(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_ofnode_string_err, UT_TESTF_LIVE_TREE); + +static int dm_test_ofnode_get_phy(struct unit_test_state *uts) +{ + ofnode eth_node, phy_node; + u32 reg; + + eth_node = ofnode_path("/phy-test-eth"); + ut_assert(ofnode_valid(eth_node)); + + phy_node = ofnode_get_phy_node(eth_node); + ut_assert(ofnode_valid(phy_node)); + + reg = ofnode_read_u32_default(phy_node, "reg", -1U); + ut_asserteq_64(0x1, reg); + + return 0; +} +DM_TEST(dm_test_ofnode_get_phy, 0);