[PATCH v2 4/6] board: starfive: support Milk-V Mars board

Heinrich Schuchardt
2024-03-21T18:13:06Z

The differences between the Milk-V Mars board and the VisionFive 2 board
are small enough that we can support both using the same U-Boot build.

* The model and compatible property are taken from proposed Linux patches.
* The EEPROM is atmel,24c02 according to the vendor U-Boot.
* The second Ethernet port is not available.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---
v2:
do not overwrite /soc/i2c@12050000/eeprom@50/compatible

---
board/starfive/visionfive2/spl.c | 99 ++++++++++++++++++++++++++++----
1 file changed, 87 insertions(+), 12 deletions(-)

diff --git a/board/starfive/visionfive2/spl.c b/board/starfive/visionfive2/spl.c
index 1b49945d11b..e0e33cb37ba 100644
--- a/board/starfive/visionfive2/spl.c
+++ b/board/starfive/visionfive2/spl.c
@@ -27,6 +27,26 @@ struct starfive_vf2_pro {
const char *value;
};

+static const struct starfive_vf2_pro milk_v_mars[] = {
+ {"/soc/ethernet@16030000", "starfive,tx-use-rgmii-clk", NULL},
+ {"/soc/ethernet@16040000", "starfive,tx-use-rgmii-clk", NULL},
+
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "motorcomm,tx-clk-adj-enabled", NULL},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "motorcomm,tx-clk-100-inverted", NULL},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "motorcomm,tx-clk-1000-inverted", NULL},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "motorcomm,rx-clk-drv-microamp", "3970"},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "motorcomm,rx-data-drv-microamp", "2910"},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "rx-internal-delay-ps", "1900"},
+ {"/soc/ethernet@16030000/mdio/ethernet-phy@0",
+ "tx-internal-delay-ps", "1500"},
+};
+
static const struct starfive_vf2_pro starfive_vera[] = {
{"/soc/ethernet@16030000/mdio/ethernet-phy@0", "rx-internal-delay-ps",
"1900"},
@@ -67,6 +87,49 @@ static const struct starfive_vf2_pro starfive_verb[] = {
"tx-internal-delay-ps", "0"},
};

+void spl_fdt_fixup_mars(void *fdt)
+{
+ static const char compat[] = "milkv,mars\0starfive,jh7110";
+ u32 phandle;
+ u8 i;
+ int offset;
+ int ret;
+
+ fdt_setprop(fdt, fdt_path_offset(fdt, "/"), "compatible", compat, sizeof(compat));
+ fdt_setprop_string(fdt, fdt_path_offset(fdt, "/"), "model",
+ "Milk-V Mars");
+
+ /* gmac0 */
+ offset = fdt_path_offset(fdt, "/soc/clock-controller@17000000");
+ phandle = fdt_get_phandle(fdt, offset);
+ offset = fdt_path_offset(fdt, "/soc/ethernet@16030000");
+
+ fdt_setprop_u32(fdt, offset, "assigned-clocks", phandle);
+ fdt_appendprop_u32(fdt, offset, "assigned-clocks", JH7110_AONCLK_GMAC0_TX);
+ fdt_setprop_u32(fdt, offset, "assigned-clock-parents", phandle);
+ fdt_appendprop_u32(fdt, offset, "assigned-clock-parents",
+ JH7110_AONCLK_GMAC0_RMII_RTX);
+
+ /* gmac1 */
+ fdt_setprop_string(fdt, fdt_path_offset(fdt, "/soc/ethernet@16040000"),
+ "status", "disabled");
+
+ for (i = 0; i < ARRAY_SIZE(milk_v_mars); i++) {
+ offset = fdt_path_offset(fdt, milk_v_mars[i].path);
+
+ if (starfive_verb[i].value)
+ ret = fdt_setprop_u32(fdt, offset, milk_v_mars[i].name,
+ dectoul(milk_v_mars[i].value, NULL));
+ else
+ ret = fdt_setprop_empty(fdt, offset, milk_v_mars[i].name);
+
+ if (ret) {
+ pr_err("%s set prop %s fail.\n", __func__, milk_v_mars[i].name);
+ break;
+ }
+ }
+}
+
void spl_fdt_fixup_version_a(void *fdt)
{
static const char compat[] = "starfive,visionfive-2-v1.2a\0starfive,jh7110";
@@ -167,22 +230,34 @@ void spl_fdt_fixup_version_b(void *fdt)
void spl_perform_fixups(struct spl_image_info *spl_image)
{
u8 version;
+ const char *product_id;

- version = get_pcb_revision_from_eeprom();
- switch (version) {
- case 'a':
- case 'A':
- spl_fdt_fixup_version_a(spl_image->fdt_addr);
- break;
-
- case 'b':
- case 'B':
- default:
- spl_fdt_fixup_version_b(spl_image->fdt_addr);
+ product_id = get_product_id_from_eeprom();
+ if (!product_id) {
+ pr_err("Can't read EEPROM\n");
+ return;
+ }
+ if (!strncmp(product_id, "MARS", 4)) {
+ spl_fdt_fixup_mars(spl_image->fdt_addr);
+ } else if (!strncmp(product_id, "VF7110", 6)) {
+ version = get_pcb_revision_from_eeprom();
+ switch (version) {
+ case 'a':
+ case 'A':
+ spl_fdt_fixup_version_a(spl_image->fdt_addr);
+ break;
+
+ case 'b':
+ case 'B':
+ default:
+ spl_fdt_fixup_version_b(spl_image->fdt_addr);
break;
+ };
+ } else {
+ pr_err("Unknown product %s\n", product_id);
};

- /* Update the memory size which read form eeprom or DT */
+ /* Update the memory size which read from eeprom or DT */
fdt_fixup_memory(spl_image->fdt_addr, 0x40000000, gd->ram_size);
}

--
2.43.0