#include <common.h>
#include <asm/arch/clock.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/arch/imx8mp_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <dm.h>
+#include <dt-bindings/clock/imx8mp-clock.h>
#include <env.h>
#include <env_internal.h>
#include <i2c_eeprom.h>
+#include <linux/bitfield.h>
#include <malloc.h>
#include <net.h>
#include <miiphy.h>
{
return prio ? ENVL_UNKNOWN : ENVL_SPI_FLASH;
}
+
+static const char *iomuxc_compat = "fsl,imx8mp-iomuxc";
+static const char *lan_compat = "ethernet-phy-id0007.c110";
+static const char *ksz_compat = "ethernet-phy-id0022.1642";
+
+static int dh_dt_patch_som_eqos(const void *fdt_blob)
+{
+ const void __iomem *mux = (void __iomem *)IOMUXC_BASE_ADDR +
+ FIELD_GET(MUX_CTRL_OFS_MASK, MX8MP_PAD_ENET_RX_CTL__GPIO1_IO24);
+ int mac_node, mdio_node, iomuxc_node, ksz_node, lan_node, subnode;
+ const char *mac_compat = "nxp,imx8mp-dwmac-eqos";
+ void *blob = (void *)fdt_blob;
+ const fdt32_t *clk_prop;
+ bool is_gigabit;
+ u32 handle;
+ u32 clk[6];
+
+ setbits_le32(mux, IOMUX_CONFIG_SION);
+ is_gigabit = !(readl(GPIO1_BASE_ADDR) & BIT(24));
+ clrbits_le32(mux, IOMUX_CONFIG_SION);
+
+ /* Adjust EQoS node for Gigabit KSZ9131RNXI or Fast LAN8740Ai PHY */
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ if (mac_node < 0)
+ return 0;
+
+ mdio_node = fdt_first_subnode(blob, mac_node);
+ if (mdio_node < 0)
+ return 0;
+
+ /* KSZ9131RNXI */
+ ksz_node = fdt_node_offset_by_compatible(blob, mdio_node, ksz_compat);
+ if (ksz_node < 0)
+ return 0;
+
+ /* LAN8740Ai */
+ lan_node = fdt_node_offset_by_compatible(blob, mdio_node, lan_compat);
+ if (lan_node < 0)
+ return 0;
+
+ iomuxc_node = fdt_node_offset_by_compatible(blob, -1, iomuxc_compat);
+ if (iomuxc_node < 0)
+ return 0;
+
+ /*
+ * The code below adjusts the following DT properties:
+ * - assigned-clock-parents .. 125 MHz RGMII / 50 MHz RMII ref clock
+ * - assigned-clock-rates .... 125 MHz RGMII / 50 MHz RMII ref clock
+ * - phy-handle .............. KSZ9131RNXI RGMII / LAN8740Ai RMII
+ * - phy-mode ................ RGMII / RMII
+ * - pinctrl-0 ............... RGMII / RMII
+ * - PHY subnode status ...... "disabled"/"okay" per RGMII / RMII
+ */
+
+ /* Perform all inplace changes first, string changes last. */
+ clk_prop = fdt_getprop(blob, mac_node, "assigned-clock-parents", NULL);
+ if (!clk_prop)
+ return 0;
+ clk[0] = clk_prop[0];
+ clk[1] = cpu_to_fdt32(IMX8MP_SYS_PLL1_266M);
+ clk[2] = clk_prop[2];
+ clk[3] = cpu_to_fdt32(IMX8MP_SYS_PLL2_100M);
+ clk[4] = clk_prop[4];
+ clk[5] = is_gigabit ? cpu_to_fdt32(IMX8MP_SYS_PLL2_125M) :
+ cpu_to_fdt32(IMX8MP_SYS_PLL2_50M);
+ fdt_setprop_inplace(blob, mac_node, "assigned-clock-parents",
+ clk, 6 * sizeof(u32));
+
+ clk[0] = cpu_to_fdt32(0);
+ clk[1] = cpu_to_fdt32(100000000);
+ clk[2] = is_gigabit ? cpu_to_fdt32(125000000) :
+ cpu_to_fdt32(50000000);
+ fdt_setprop_inplace(blob, mac_node, "assigned-clock-rates",
+ clk, 3 * sizeof(u32));
+
+ handle = fdt_get_phandle(blob, is_gigabit ? ksz_node : lan_node);
+ fdt_setprop_inplace_u32(blob, mac_node, "phy-handle", handle);
+
+ fdt_for_each_subnode(subnode, blob, iomuxc_node) {
+ if (!strstr(fdt_get_name(blob, subnode, NULL),
+ is_gigabit ? "eqos-rgmii" : "eqos-rmii"))
+ continue;
+
+ handle = fdt_get_phandle(blob, subnode);
+ fdt_setprop_inplace_u32(blob, mac_node, "pinctrl-0", handle);
+ break;
+ }
+
+ fdt_setprop_string(blob, mac_node, "phy-mode",
+ is_gigabit ? "rgmii-id" : "rmii");
+
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ mdio_node = fdt_first_subnode(blob, mac_node);
+ ksz_node = fdt_node_offset_by_compatible(blob, mdio_node, ksz_compat);
+ fdt_setprop_string(blob, ksz_node, "status",
+ is_gigabit ? "okay" : "disabled");
+
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ mdio_node = fdt_first_subnode(blob, mac_node);
+ lan_node = fdt_node_offset_by_compatible(blob, mdio_node, lan_compat);
+ fdt_setprop_string(blob, lan_node, "status",
+ is_gigabit ? "disabled" : "okay");
+
+ return 0;
+}
+
+static int dh_dt_patch_som_fec(const void *fdt_blob)
+{
+ const void __iomem *mux = (void __iomem *)IOMUXC_BASE_ADDR +
+ FIELD_GET(MUX_CTRL_OFS_MASK, MX8MP_PAD_SAI1_TXFS__GPIO4_IO10);
+ int mac_node, mdio_node, iomuxc_node, lan_node, phy_node, subnode;
+ const char *mac_compat = "fsl,imx8mp-fec";
+ void *blob = (void *)fdt_blob;
+ const fdt32_t *clk_prop;
+ bool is_gigabit;
+ u32 handle;
+ u32 clk[8];
+
+ setbits_le32(mux, IOMUX_CONFIG_SION);
+ is_gigabit = !(readl(GPIO4_BASE_ADDR) & BIT(10));
+ clrbits_le32(mux, IOMUX_CONFIG_SION);
+
+ /* Test for non-default SoM with 100/Full PHY attached to FEC */
+ if (is_gigabit)
+ return 0;
+
+ /* Adjust FEC node for Fast LAN8740Ai PHY */
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ if (mac_node < 0)
+ return 0;
+
+ /* Optional PHY pointed to by phy-handle, possibly on carrier board */
+ phy_node = fdtdec_lookup_phandle(blob, mac_node, "phy-handle");
+ if (phy_node > 0) {
+ fdt_setprop_string(blob, phy_node, "status", "disabled");
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ }
+
+ mdio_node = fdt_first_subnode(blob, mac_node);
+ if (mdio_node < 0)
+ return 0;
+
+ /* LAN8740Ai */
+ lan_node = fdt_node_offset_by_compatible(blob, mdio_node, lan_compat);
+ if (lan_node < 0)
+ return 0;
+
+ iomuxc_node = fdt_node_offset_by_compatible(blob, -1, iomuxc_compat);
+ if (iomuxc_node < 0)
+ return 0;
+
+ /*
+ * The code below adjusts the following DT properties:
+ * - assigned-clock-parents .. 50 MHz RMII ref clock
+ * - assigned-clock-rates .... 50 MHz RMII ref clock
+ * - phy-handle .............. LAN8740Ai RMII
+ * - phy-mode ................ RMII
+ * - pinctrl-0 ............... RMII
+ * - PHY subnode status ...... "okay" for RMII PHY
+ */
+
+ /* Perform all inplace changes first, string changes last. */
+ clk_prop = fdt_getprop(blob, mac_node, "assigned-clock-parents", NULL);
+ if (!clk_prop)
+ return 0;
+ clk[0] = clk_prop[0];
+ clk[1] = cpu_to_fdt32(IMX8MP_SYS_PLL1_266M);
+ clk[2] = clk_prop[2];
+ clk[3] = cpu_to_fdt32(IMX8MP_SYS_PLL2_100M);
+ clk[4] = clk_prop[4];
+ clk[5] = cpu_to_fdt32(IMX8MP_SYS_PLL2_50M);
+ clk[6] = clk_prop[6];
+ clk[7] = cpu_to_fdt32(IMX8MP_SYS_PLL2_50M);
+ fdt_setprop_inplace(blob, mac_node, "assigned-clock-parents",
+ clk, 8 * sizeof(u32));
+
+ clk[0] = cpu_to_fdt32(0);
+ clk[1] = cpu_to_fdt32(100000000);
+ clk[2] = cpu_to_fdt32(50000000);
+ clk[3] = cpu_to_fdt32(0);
+ fdt_setprop_inplace(blob, mac_node, "assigned-clock-rates",
+ clk, 4 * sizeof(u32));
+
+ handle = fdt_get_phandle(blob, lan_node);
+ fdt_setprop_inplace_u32(blob, mac_node, "phy-handle", handle);
+
+ fdt_for_each_subnode(subnode, blob, iomuxc_node) {
+ if (!strstr(fdt_get_name(blob, subnode, NULL), "fec-rmii"))
+ continue;
+
+ handle = fdt_get_phandle(blob, subnode);
+ fdt_setprop_inplace_u32(blob, mac_node, "pinctrl-0", handle);
+ break;
+ }
+
+ fdt_setprop_string(blob, mac_node, "phy-mode", "rmii");
+ mac_node = fdt_node_offset_by_compatible(blob, -1, mac_compat);
+ mdio_node = fdt_first_subnode(blob, mac_node);
+ lan_node = fdt_node_offset_by_compatible(blob, mdio_node, lan_compat);
+ fdt_setprop_string(blob, lan_node, "status", "okay");
+
+ return 0;
+}
+
+static int dh_dt_patch_som(const void *fdt_blob)
+{
+ int ret;
+
+ /* Do nothing if not i.MX8MP DHCOM SoM */
+ ret = fdt_node_check_compatible(fdt_blob, 0, "dh,imx8mp-dhcom-som");
+ if (ret)
+ return 0;
+
+ ret = dh_dt_patch_som_eqos(fdt_blob);
+ if (ret)
+ return ret;
+
+ return dh_dt_patch_som_fec(fdt_blob);
+}
+
+int fdtdec_board_setup(const void *fdt_blob)
+{
+ return dh_dt_patch_som(fdt_blob);
+}
projects / u-boot.git / commitdiff
