[U-Boot] [PATCH 5/7] ARM: DRA7xx: Add CPSW support to DRA7xx EVM
Mugunthan V N
mugunthanvnm at ti.com
Mon Jul 8 12:34:41 CEST 2013
Adding support for CPSW Ethernet support found in DRA7xx EVM
Signed-off-by: Mugunthan V N <mugunthanvnm at ti.com>
---
arch/arm/cpu/armv7/omap5/prcm-regs.c | 4 +
arch/arm/include/asm/arch-omap5/cpu.h | 6 ++
arch/arm/include/asm/arch-omap5/omap.h | 26 ++++++
arch/arm/include/asm/omap_common.h | 4 +
board/ti/dra7xx/evm.c | 150 ++++++++++++++++++++++++++++++--
5 files changed, 185 insertions(+), 5 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap5/prcm-regs.c b/arch/arm/cpu/armv7/omap5/prcm-regs.c
index 1b4ab84..29129f6 100644
--- a/arch/arm/cpu/armv7/omap5/prcm-regs.c
+++ b/arch/arm/cpu/armv7/omap5/prcm-regs.c
@@ -394,6 +394,10 @@ struct omap_sys_ctrl_regs const omap5_ctrl = {
struct omap_sys_ctrl_regs const dra7xx_ctrl = {
.control_status = 0x4A002134,
+ .control_core_mac_id_0_lo = 0x4A002514,
+ .control_core_mac_id_0_hi = 0x4A002518,
+ .control_core_mac_id_1_lo = 0x4A00251C,
+ .control_core_mac_id_1_hi = 0x4A002520,
.control_core_mmr_lock1 = 0x4A002540,
.control_core_mmr_lock2 = 0x4A002544,
.control_core_mmr_lock3 = 0x4A002548,
diff --git a/arch/arm/include/asm/arch-omap5/cpu.h b/arch/arm/include/asm/arch-omap5/cpu.h
index 4753f46..347f104 100644
--- a/arch/arm/include/asm/arch-omap5/cpu.h
+++ b/arch/arm/include/asm/arch-omap5/cpu.h
@@ -116,6 +116,8 @@ struct watchdog {
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL_STRICT_NAMES */
+#define BIT(x) (1 << (x))
+
#define WD_UNLOCK1 0xAAAA
#define WD_UNLOCK2 0x5555
@@ -175,4 +177,8 @@ struct watchdog {
#define PRM_RSTST (PRM_DEVICE_BASE + 0x4)
#define PRM_RSTST_WARM_RESET_MASK 0x7FEA
+/* DRA7XX CPSW Config space */
+#define CPSW_BASE 0x48484000
+#define CPSW_MDIO_BASE 0x48485000
+
#endif /* _CPU_H */
diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index 5e6d82e..929ee67 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -208,6 +208,27 @@ struct s32ktimer {
#define OMAP5_ABB_LDOVBBMPU_MUX_CTRL_MASK (0x1 << 10)
#define OMAP5_ABB_LDOVBBMPU_VSET_OUT_MASK (0x1f << 0)
+/* IO Delay module defines */
+#define CFG_IO_DELAY_BASE 0x4844A000
+#define CFG_IO_DELAY_LOCK (CFG_IO_DELAY_BASE + 0x02C)
+
+/* CPSW IO Delay registers*/
+#define CFG_RGMII0_TXCTL (CFG_IO_DELAY_BASE + 0x74C)
+#define CFG_RGMII0_TXD0 (CFG_IO_DELAY_BASE + 0x758)
+#define CFG_RGMII0_TXD1 (CFG_IO_DELAY_BASE + 0x764)
+#define CFG_RGMII0_TXD2 (CFG_IO_DELAY_BASE + 0x770)
+#define CFG_RGMII0_TXD3 (CFG_IO_DELAY_BASE + 0x77C)
+#define CFG_VIN2A_D13 (CFG_IO_DELAY_BASE + 0xA7C)
+#define CFG_VIN2A_D17 (CFG_IO_DELAY_BASE + 0xAAC)
+#define CFG_VIN2A_D16 (CFG_IO_DELAY_BASE + 0xAA0)
+#define CFG_VIN2A_D15 (CFG_IO_DELAY_BASE + 0xA94)
+#define CFG_VIN2A_D14 (CFG_IO_DELAY_BASE + 0xA88)
+
+#define CFG_IO_DELAY_UNLOCK_KEY 0x0000AAAA
+#define CFG_IO_DELAY_LOCK_KEY 0x0000AAAB
+#define CFG_IO_DELAY_ACCESS_PATTERN 0x00029000
+#define CFG_IO_DELAY_LOCK_MASK 0x400
+
#ifndef __ASSEMBLY__
struct srcomp_params {
s8 divide_factor;
@@ -224,5 +245,10 @@ struct ctrl_ioregs {
u32 ctrl_emif_sdram_config_ext;
u32 ctrl_ddr_ctrl_ext_0;
};
+
+struct io_delay {
+ u32 addr;
+ u32 dly;
+};
#endif /* __ASSEMBLY__ */
#endif
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 4a4a769..75198cf 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -364,6 +364,10 @@ struct prcm_regs {
struct omap_sys_ctrl_regs {
u32 control_status;
+ u32 control_core_mac_id_0_lo;
+ u32 control_core_mac_id_0_hi;
+ u32 control_core_mac_id_1_lo;
+ u32 control_core_mac_id_1_hi;
u32 control_std_fuse_opp_vdd_mpu_2;
u32 control_core_mmr_lock1;
u32 control_core_mmr_lock2;
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index bf7e091..4cbd162 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -39,12 +39,53 @@
#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
*
@@ -58,11 +99,6 @@ int board_init(void)
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
@@ -101,3 +137,107 @@ int board_mmc_init(bd_t *bis)
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
--
1.7.9.5
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