On Thu, Apr 07, 2022 at 12:32:57AM +0200, Marek Behún wrote: > From: Marek Behún <[email protected]> > > 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 <[email protected]> > Reviewed-by: Ramon Fried <[email protected]> > Reviewed-by: Simon Glass <[email protected]> > --- > arch/sandbox/dts/test.dts | 13 +++++++++++++ > drivers/core/ofnode.c | 21 +++++++++++++++++++++ > drivers/core/read.c | 5 +++++ > include/dm/ofnode.h | 14 ++++++++++++++ > include/dm/read.h | 19 +++++++++++++++++++ > net/mdio-uclass.c | 24 ++++++------------------ > test/dm/ofnode.c | 18 ++++++++++++++++++ > 7 files changed, 96 insertions(+), 18 deletions(-) > > diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts > index 05c1cd5e1a..e536943503 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 8042847f3c..445b7ad5ad 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 31f9e78a06..7ff100218d 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 744dffe0a2..429aee2812 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 233af3c063..899eb813fd 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 <asm/global_data.h> > > @@ -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 649dc60f73..233b70171b 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 dab0480a42..500c63aef5 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);
So this patch consistently leads to: https://source.denx.de/u-boot/u-boot/-/jobs/423690#L222 on current master. I did have to manually merge a few changes, but I think I did that correctly. I don't see _why_ this leads to failure. Simon, any ideas? -- Tom
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