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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>
This commit is contained in:
Hatim RV 2012-12-11 00:52:47 +00:00 committed by Minkyu Kang
parent cc9fe33a36
commit 3ea93948cf
2 changed files with 103 additions and 30 deletions
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18
arch/arm/include/asm/arch-exynos/sromc.h
View File

@ -48,4 +48,22 @@ struct s5p_sromc {
/* Configure the Band Width and Bank Control Regs for required SROMC Bank */
void s5p_config_sromc(u32 srom_bank, u32 srom_bw_conf, u32 srom_bc_conf);
enum {
FDT_SROM_PMC,
FDT_SROM_TACP,
FDT_SROM_TAH,
FDT_SROM_TCOH,
FDT_SROM_TACC,
FDT_SROM_TCOS,
FDT_SROM_TACS,
FDT_SROM_TIMING_COUNT,
};
struct fdt_sromc {
u8 bank; /* srom bank number */
u8 width; /* bus width in bytes */
unsigned int timing[FDT_SROM_TIMING_COUNT]; /* timing parameters */
};
#endif /* __ASM_ARCH_SROMC_H_ */

115
board/samsung/smdk5250/smdk5250.c
View File

@ -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 @@ void dram_init_banksize(void)
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;
}