ARM: DRA7xx: Add CPSW support to DRA7xx EVM
Adding support for CPSW Ethernet support found in DRA7xx EVM
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index 8190e4b..9a114e2 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -23,12 +23,53 @@
#include <asm/ehci-omap.h>
#endif
+#ifdef CONFIG_DRIVER_TI_CPSW
+#include <cpsw.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
const struct omap_sysinfo sysinfo = {
"Board: DRA7xx\n"
};
+/*
+ * Adjust I/O delays on the Tx control and data lines of each MAC port. This
+ * is a workaround in order to work properly with the DP83865 PHYs on the EVM.
+ * In 3COM RGMII mode this PHY applies it's own internal clock delay, so we
+ * essentially need to counteract the DRA7xx internal delay, and we do this
+ * by delaying the control and data lines. If not using this PHY, you probably
+ * don't need to do this stuff!
+ */
+static void dra7xx_adj_io_delay(const struct io_delay *io_dly)
+{
+ int i = 0;
+ u32 reg_val;
+ u32 delta;
+ u32 coarse;
+ u32 fine;
+
+ writel(CFG_IO_DELAY_UNLOCK_KEY, CFG_IO_DELAY_LOCK);
+
+ while(io_dly[i].addr) {
+ writel(CFG_IO_DELAY_ACCESS_PATTERN & ~CFG_IO_DELAY_LOCK_MASK,
+ io_dly[i].addr);
+ delta = io_dly[i].dly;
+ reg_val = readl(io_dly[i].addr) & 0x3ff;
+ coarse = ((reg_val >> 5) & 0x1F) + ((delta >> 5) & 0x1F);
+ coarse = (coarse > 0x1F) ? (0x1F) : (coarse);
+ fine = (reg_val & 0x1F) + (delta & 0x1F);
+ fine = (fine > 0x1F) ? (0x1F) : (fine);
+ reg_val = CFG_IO_DELAY_ACCESS_PATTERN |
+ CFG_IO_DELAY_LOCK_MASK |
+ ((coarse << 5) | (fine));
+ writel(reg_val, io_dly[i].addr);
+ i++;
+ }
+
+ writel(CFG_IO_DELAY_LOCK_KEY, CFG_IO_DELAY_LOCK);
+}
+
/**
* @brief board_init
*
@@ -42,11 +83,6 @@
return 0;
}
-int board_eth_init(bd_t *bis)
-{
- return 0;
-}
-
/**
* @brief misc_init_r - Configure EVM board specific configurations
* such as power configurations, ethernet initialization as phase2 of
@@ -85,3 +121,107 @@
return 0;
}
#endif
+
+#ifdef CONFIG_DRIVER_TI_CPSW
+
+/* Delay value to add to calibrated value */
+#define RGMII0_TXCTL_DLY_VAL ((0x3 << 5) + 0x8)
+#define RGMII0_TXD0_DLY_VAL ((0x3 << 5) + 0x8)
+#define RGMII0_TXD1_DLY_VAL ((0x3 << 5) + 0x2)
+#define RGMII0_TXD2_DLY_VAL ((0x4 << 5) + 0x0)
+#define RGMII0_TXD3_DLY_VAL ((0x4 << 5) + 0x0)
+#define VIN2A_D13_DLY_VAL ((0x3 << 5) + 0x8)
+#define VIN2A_D17_DLY_VAL ((0x3 << 5) + 0x8)
+#define VIN2A_D16_DLY_VAL ((0x3 << 5) + 0x2)
+#define VIN2A_D15_DLY_VAL ((0x4 << 5) + 0x0)
+#define VIN2A_D14_DLY_VAL ((0x4 << 5) + 0x0)
+
+static void cpsw_control(int enabled)
+{
+ /* VTP can be added here */
+
+ return;
+}
+
+static struct cpsw_slave_data cpsw_slaves[] = {
+ {
+ .slave_reg_ofs = 0x208,
+ .sliver_reg_ofs = 0xd80,
+ .phy_id = 0,
+ },
+ {
+ .slave_reg_ofs = 0x308,
+ .sliver_reg_ofs = 0xdc0,
+ .phy_id = 1,
+ },
+};
+
+static struct cpsw_platform_data cpsw_data = {
+ .mdio_base = CPSW_MDIO_BASE,
+ .cpsw_base = CPSW_BASE,
+ .mdio_div = 0xff,
+ .channels = 8,
+ .cpdma_reg_ofs = 0x800,
+ .slaves = 1,
+ .slave_data = cpsw_slaves,
+ .ale_reg_ofs = 0xd00,
+ .ale_entries = 1024,
+ .host_port_reg_ofs = 0x108,
+ .hw_stats_reg_ofs = 0x900,
+ .bd_ram_ofs = 0x2000,
+ .mac_control = (1 << 5),
+ .control = cpsw_control,
+ .host_port_num = 0,
+ .version = CPSW_CTRL_VERSION_2,
+};
+
+int board_eth_init(bd_t *bis)
+{
+ int ret;
+ uint8_t mac_addr[6];
+ uint32_t mac_hi, mac_lo;
+ uint32_t ctrl_val;
+ const struct io_delay io_dly[] = {
+ {CFG_RGMII0_TXCTL, RGMII0_TXCTL_DLY_VAL},
+ {CFG_RGMII0_TXD0, RGMII0_TXD0_DLY_VAL},
+ {CFG_RGMII0_TXD1, RGMII0_TXD1_DLY_VAL},
+ {CFG_RGMII0_TXD2, RGMII0_TXD2_DLY_VAL},
+ {CFG_RGMII0_TXD3, RGMII0_TXD3_DLY_VAL},
+ {CFG_VIN2A_D13, VIN2A_D13_DLY_VAL},
+ {CFG_VIN2A_D17, VIN2A_D17_DLY_VAL},
+ {CFG_VIN2A_D16, VIN2A_D16_DLY_VAL},
+ {CFG_VIN2A_D15, VIN2A_D15_DLY_VAL},
+ {CFG_VIN2A_D14, VIN2A_D14_DLY_VAL},
+ {0}
+ };
+
+ /* Adjust IO delay for RGMII tx path */
+ dra7xx_adj_io_delay(io_dly);
+
+ /* try reading mac address from efuse */
+ mac_lo = readl((*ctrl)->control_core_mac_id_0_lo);
+ mac_hi = readl((*ctrl)->control_core_mac_id_0_hi);
+ mac_addr[0] = mac_hi & 0xFF;
+ mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+ mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+ mac_addr[3] = mac_lo & 0xFF;
+ mac_addr[4] = (mac_lo & 0xFF00) >> 8;
+ mac_addr[5] = (mac_lo & 0xFF0000) >> 16;
+
+ if (!getenv("ethaddr")) {
+ printf("<ethaddr> not set. Validating first E-fuse MAC\n");
+
+ if (is_valid_ether_addr(mac_addr))
+ eth_setenv_enetaddr("ethaddr", mac_addr);
+ }
+ ctrl_val = readl((*ctrl)->control_core_control_io1) & (~0x33);
+ ctrl_val |= 0x22;
+ writel(ctrl_val, (*ctrl)->control_core_control_io1);
+
+ ret = cpsw_register(&cpsw_data);
+ if (ret < 0)
+ printf("Error %d registering CPSW switch\n", ret);
+
+ return ret;
+}
+#endif