diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/dram_init.c | 40 |
3 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 84cabb8..8a9cfcc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -827,6 +827,7 @@ config ARCH_UNIPHIER select SPL select OF_CONTROL select SPL_OF_CONTROL + select OF_LIBFDT select DM select SPL_DM select DM_GPIO diff --git a/arch/arm/mach-uniphier/Kconfig b/arch/arm/mach-uniphier/Kconfig index 89be0b3..e256eeb 100644 --- a/arch/arm/mach-uniphier/Kconfig +++ b/arch/arm/mach-uniphier/Kconfig @@ -40,6 +40,7 @@ config ARCH_UNIPHIER_LD11 config ARCH_UNIPHIER_LD20 bool "UniPhier PH1-LD20 SoC" select ARCH_UNIPHIER_64BIT + select OF_BOARD_SETUP endchoice diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c index ef0e2e8..489366c 100644 --- a/arch/arm/mach-uniphier/dram_init.c +++ b/arch/arm/mach-uniphier/dram_init.c @@ -9,6 +9,9 @@ #include <fdtdec.h> #include <linux/err.h> +#include "init.h" +#include "soc-info.h" + DECLARE_GLOBAL_DATA_PTR; static const void *get_memory_reg_prop(const void *fdt, int *lenp) @@ -81,3 +84,40 @@ void dram_init_banksize(void) (unsigned long)gd->bd->bi_dram[i].size); } } + +#ifdef CONFIG_OF_BOARD_SETUP +/* + * The DRAM PHY requires 64 byte scratch area in each DRAM channel + * for its dynamic PHY training feature. + */ +int ft_board_setup(void *fdt, bd_t *bd) +{ + const struct uniphier_board_data *param; + unsigned long rsv_addr; + const unsigned long rsv_size = 64; + int ch, ret; + + if (uniphier_get_soc_type() != SOC_UNIPHIER_LD20) + return 0; + + param = uniphier_get_board_param(); + if (!param) { + printf("failed to get board parameter\n"); + return -ENODEV; + } + + for (ch = 0; ch < param->dram_nr_ch; ch++) { + rsv_addr = param->dram_ch[ch].base + param->dram_ch[ch].size; + rsv_addr -= rsv_size; + + ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size); + if (ret) + return -ENOSPC; + + printf(" Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n", + rsv_addr, rsv_size); + } + + return 0; +} +#endif |