exynos5: Add DT based driver for SMC911X ethernet
Add device tree based ethernet driver for SMC911X controller on
SMDK5250 boards.
Signed-off-by: Hatim Ali <hatim.rv@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 9c926d6..268b42c 100644
--- a/board/samsung/smdk5250/smdk5250.c
+++ b/board/samsung/smdk5250/smdk5250.c
@@ -21,6 +21,7 @@
*/
#include <common.h>
+#include <fdtdec.h>
#include <asm/io.h>
#include <i2c.h>
#include <netdev.h>
@@ -34,34 +35,6 @@
DECLARE_GLOBAL_DATA_PTR;
-#ifdef CONFIG_SMC911X
-static int smc9115_pre_init(void)
-{
- u32 smc_bw_conf, smc_bc_conf;
- int err;
-
- /* Ethernet needs data bus width of 16 bits */
- smc_bw_conf = SROMC_DATA16_WIDTH(CONFIG_ENV_SROM_BANK)
- | SROMC_BYTE_ENABLE(CONFIG_ENV_SROM_BANK);
-
- smc_bc_conf = SROMC_BC_TACS(0x01) | SROMC_BC_TCOS(0x01)
- | SROMC_BC_TACC(0x06) | SROMC_BC_TCOH(0x01)
- | SROMC_BC_TAH(0x0C) | SROMC_BC_TACP(0x09)
- | SROMC_BC_PMC(0x01);
-
- /* Select and configure the SROMC bank */
- err = exynos_pinmux_config(PERIPH_ID_SROMC,
- CONFIG_ENV_SROM_BANK | PINMUX_FLAG_16BIT);
- if (err) {
- debug("SROMC not configured\n");
- return err;
- }
-
- s5p_config_sromc(CONFIG_ENV_SROM_BANK, smc_bw_conf, smc_bc_conf);
- return 0;
-}
-#endif
-
int board_init(void)
{
gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
@@ -122,12 +95,94 @@
PHYS_SDRAM_8_SIZE);
}
+#ifdef CONFIG_OF_CONTROL
+static int decode_sromc(const void *blob, struct fdt_sromc *config)
+{
+ int err;
+ int node;
+
+ node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
+ if (node < 0) {
+ debug("Could not find SROMC node\n");
+ return node;
+ }
+
+ config->bank = fdtdec_get_int(blob, node, "bank", 0);
+ config->width = fdtdec_get_int(blob, node, "width", 2);
+
+ err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
+ FDT_SROM_TIMING_COUNT);
+ if (err < 0) {
+ debug("Could not decode SROMC configuration\n");
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ return 0;
+}
+#endif
+
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_SMC911X
- if (smc9115_pre_init())
+ u32 smc_bw_conf, smc_bc_conf;
+ struct fdt_sromc config;
+ fdt_addr_t base_addr;
+ int node;
+
+#ifdef CONFIG_OF_CONTROL
+ node = decode_sromc(gd->fdt_blob, &config);
+ if (node < 0) {
+ debug("%s: Could not find sromc configuration\n", __func__);
+ return 0;
+ }
+ node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
+ if (node < 0) {
+ debug("%s: Could not find lan9215 configuration\n", __func__);
+ return 0;
+ }
+
+ /* We now have a node, so any problems from now on are errors */
+ base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
+ if (base_addr == FDT_ADDR_T_NONE) {
+ debug("%s: Could not find lan9215 address\n", __func__);
return -1;
- return smc911x_initialize(0, CONFIG_SMC911X_BASE);
+ }
+#else
+ /* Non-FDT configuration - bank number and timing parameters*/
+ config.bank = CONFIG_ENV_SROM_BANK;
+ config.width = 2;
+
+ config.timing[FDT_SROM_TACS] = 0x01;
+ config.timing[FDT_SROM_TCOS] = 0x01;
+ config.timing[FDT_SROM_TACC] = 0x06;
+ config.timing[FDT_SROM_TCOH] = 0x01;
+ config.timing[FDT_SROM_TAH] = 0x0C;
+ config.timing[FDT_SROM_TACP] = 0x09;
+ config.timing[FDT_SROM_PMC] = 0x01;
+ base_addr = CONFIG_SMC911X_BASE;
+#endif
+
+ /* Ethernet needs data bus width of 16 bits */
+ if (config.width != 2) {
+ debug("%s: Unsupported bus width %d\n", __func__,
+ config.width);
+ return -1;
+ }
+ smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
+ | SROMC_BYTE_ENABLE(config.bank);
+
+ smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS]) |\
+ SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |\
+ SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |\
+ SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |\
+ SROMC_BC_TAH(config.timing[FDT_SROM_TAH]) |\
+ SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |\
+ SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
+
+ /* Select and configure the SROMC bank */
+ exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
+ s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
+ return smc911x_initialize(0, base_addr);
#endif
return 0;
}