diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0005-enable-passthrough-in-uboot.patch')
-rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0005-enable-passthrough-in-uboot.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0005-enable-passthrough-in-uboot.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0005-enable-passthrough-in-uboot.patch new file mode 100644 index 000000000..46a547282 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0005-enable-passthrough-in-uboot.patch @@ -0,0 +1,53 @@ +From 872e3fd3ae8f692ab11c49dbbd1c5b311c2aaad1 Mon Sep 17 00:00:00 2001 +From: Kuiying Wang <kuiying.wang@intel.com> +Date: Wed, 7 Nov 2018 13:57:57 +0800 +Subject: [PATCH] enable passthrough in uboot + +--- + arch/arm/mach-aspeed/ast-scu.c | 22 ++++++++++++++++++++++ + board/aspeed/ast-g5/ast-g5.c | 2 ++ + 2 files changed, 24 insertions(+) + +diff --git a/arch/arm/mach-aspeed/ast-scu.c b/arch/arm/mach-aspeed/ast-scu.c +index fff02dc000..d27f3d3ede 100644 +--- a/arch/arm/mach-aspeed/ast-scu.c ++++ b/arch/arm/mach-aspeed/ast-scu.c +@@ -544,3 +544,25 @@ void ast_config_uart5_clk(void) + ast_scu_write(ast_scu_read(AST_SCU_MISC2_CTRL) & + ~(1 << 28), AST_SCU_MISC2_CTRL); + } ++ ++ ++void ast_enable_pass_through(void) ++{ ++ //Enable GPIOE pin mode, SCU80[16:23] = 00 */ ++ ast_scu_write(ast_scu_read(AST_SCU_FUN_PIN_CTRL1) & (~0x00FF0000), ++ AST_SCU_FUN_PIN_CTRL1); ++ ++ //Enable all pass through pins by setting SCU8C[15:12] = 0x3. ++ //Pass-through pins set: ++ //GPIOE0 -> GPIOE1 ++ //GPIOE2 -> GPIOE3 ++ ast_scu_write(ast_scu_read(AST_SCU_FUN_PIN_CTRL4) | (0x3000), ++ AST_SCU_FUN_PIN_CTRL4); ++ ++ //Disable HWStrap for GPIOE pass-through mode ++ //The write operation to SCU70(0x1e6e2070) only can set to '1'. ++ //To clear to '0', it must write '1' to 0x1e6e207c ++ if (ast_scu_read(AST_SCU_HW_STRAP1) & (0x1 << 22)){ ++ ast_scu_write((0x1 << 22), AST_SCU_REVISION_ID); ++ } ++} +diff --git a/board/aspeed/ast-g5/ast-g5.c b/board/aspeed/ast-g5/ast-g5.c +index 45353b8f78..02eb2c3990 100644 +--- a/board/aspeed/ast-g5/ast-g5.c ++++ b/board/aspeed/ast-g5/ast-g5.c +@@ -23,6 +23,8 @@ int board_early_init_f(void) + { + /* make sure uart5 is using 24MHz clock */ + ast_config_uart5_clk(); ++ /*enable pass through*/ ++ ast_enable_pass_through(); + + return 0; + } |