1 // SPDX-License-Identifier: GPL-2.0+
14 /* macros copied over from mdio_sandbox.c */
15 #define SANDBOX_PHY_ADDR 5
16 #define SANDBOX_PHY_REG_CNT 2
18 #define TEST_REG_VALUE 0xabcd
20 static int dm_test_mdio_mux(struct unit_test_state *uts)
24 struct udevice *mdio_ch0, *mdio_ch1, *mdio;
25 struct mdio_ops *ops, *ops_parent;
26 struct mdio_mux_ops *mmops;
29 ut_assertok(uclass_get(UCLASS_MDIO_MUX, &uc));
31 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO_MUX, "mdio-mux-test",
34 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@0",
36 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-ch-test@1",
39 ut_assertok(uclass_get_device_by_name(UCLASS_MDIO, "mdio-test", &mdio));
41 ops = mdio_get_ops(mdio_ch0);
42 ut_assertnonnull(ops);
43 ut_assertnonnull(ops->read);
44 ut_assertnonnull(ops->write);
46 mmops = mdio_mux_get_ops(mux);
47 ut_assertnonnull(mmops);
48 ut_assertnonnull(mmops->select);
50 ops_parent = mdio_get_ops(mdio);
51 ut_assertnonnull(ops);
52 ut_assertnonnull(ops->read);
55 * mux driver sets last register on the emulated PHY whenever a group
56 * is selected to the selection #. Just reading that register from
57 * either of the child buses should return the id of the child bus
59 reg = ops->read(mdio_ch0, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
60 SANDBOX_PHY_REG_CNT - 1);
63 reg = ops->read(mdio_ch1, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
64 SANDBOX_PHY_REG_CNT - 1);
67 mmops->select(mux, MDIO_MUX_SELECT_NONE, 5);
68 reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
69 SANDBOX_PHY_REG_CNT - 1);
72 mmops->deselect(mux, 5);
73 reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
74 SANDBOX_PHY_REG_CNT - 1);
75 ut_asserteq(reg, (u16)MDIO_MUX_SELECT_NONE);
80 DM_TEST(dm_test_mdio_mux, DM_TESTF_SCAN_FDT);