diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0004-Make-sure-debug-uart-is-using-24MHz-clock-source.patch')
-rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0004-Make-sure-debug-uart-is-using-24MHz-clock-source.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0004-Make-sure-debug-uart-is-using-24MHz-clock-source.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0004-Make-sure-debug-uart-is-using-24MHz-clock-source.patch new file mode 100644 index 000000000..e7e6c56d7 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0004-Make-sure-debug-uart-is-using-24MHz-clock-source.patch @@ -0,0 +1,73 @@ +From 954e7dd9ff9c5d1159f0896afa34c673061b82ea Mon Sep 17 00:00:00 2001 +From: Yong Li <yong.b.li@linux.intel.com> +Date: Tue, 11 Sep 2018 16:24:06 +0800 +Subject: [PATCH] Make sure debug uart is using 24MHz clock source + +u-boot defines the uart5(debug console) as 24MHz, +set the SCU14[28] to 0, to make sure the clock source is 24M + +Signed-off-by: Yong Li <yong.b.li@linux.intel.com> + +--- + arch/arm/include/asm/arch-aspeed/ast_scu.h | 2 ++ + arch/arm/include/asm/arch-aspeed/platform.h | 1 + + arch/arm/mach-aspeed/ast-scu.c | 6 ++++++ + board/aspeed/ast-g5/ast-g5.c | 8 ++++++++ + 4 files changed, 17 insertions(+) + +diff --git a/arch/arm/include/asm/arch-aspeed/ast_scu.h b/arch/arm/include/asm/arch-aspeed/ast_scu.h +index dcbc673..06825ce 100644 +--- a/arch/arm/include/asm/arch-aspeed/ast_scu.h ++++ b/arch/arm/include/asm/arch-aspeed/ast_scu.h +@@ -46,4 +46,6 @@ extern void ast_scu_init_eth(u8 num); + extern void ast_scu_multi_func_eth(u8 num); + extern void ast_scu_multi_func_romcs(u8 num); + ++void ast_config_uart5_clk(void); ++ + #endif +diff --git a/arch/arm/include/asm/arch-aspeed/platform.h b/arch/arm/include/asm/arch-aspeed/platform.h +index 1c02914..92ea33b 100644 +--- a/arch/arm/include/asm/arch-aspeed/platform.h ++++ b/arch/arm/include/asm/arch-aspeed/platform.h +@@ -27,6 +27,7 @@ + #include <asm/arch/ast2400_platform.h> + #elif defined(AST_SOC_G5) + #include <asm/arch/ast_g5_platform.h> ++#define CONFIG_BOARD_EARLY_INIT_F 1 /* Call board_early_init_f */ + #else + #err "No define for platform.h" + #endif +diff --git a/arch/arm/mach-aspeed/ast-scu.c b/arch/arm/mach-aspeed/ast-scu.c +index 12de9b8..fff02dc 100644 +--- a/arch/arm/mach-aspeed/ast-scu.c ++++ b/arch/arm/mach-aspeed/ast-scu.c +@@ -538,3 +538,9 @@ void ast_scu_get_who_init_dram(void) + break; + } + } ++ ++void ast_config_uart5_clk(void) ++{ ++ ast_scu_write(ast_scu_read(AST_SCU_MISC2_CTRL) & ++ ~(1 << 28), AST_SCU_MISC2_CTRL); ++} +diff --git a/board/aspeed/ast-g5/ast-g5.c b/board/aspeed/ast-g5/ast-g5.c +index e67a4bf..5a1fade 100644 +--- a/board/aspeed/ast-g5/ast-g5.c ++++ b/board/aspeed/ast-g5/ast-g5.c +@@ -16,6 +16,14 @@ + + DECLARE_GLOBAL_DATA_PTR; + ++int board_early_init_f(void) ++{ ++ /* make sure uart5 is using 24MHz clock */ ++ ast_config_uart5_clk(); ++ ++ return 0; ++} ++ + int board_init(void) + { + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; |