From a76e6542d1ab39ca50777f3fd0146151d0868c5c Mon Sep 17 00:00:00 2001 From: Tristan Shieh Date: Mon, 8 Apr 2019 11:01:40 +0800 Subject: mediatek: Use the 64-bit timer GPT4 is a 32-bit timer and the counter of GPT4 will overflow in about 330 seconds (0xffffffff / 13MHz). Timer and delay functions will not work properly if the counter overflows. To fix that we should use the 64-bit timer (GPT6). BUG=b:80501386 BRANCH=none Test=emerge-elm coreboot; emerge-kukui coreboot Change-Id: I9f080e47253a1b1bab4636a45cb86c8666a25302 Signed-off-by: Tristan Shieh Reviewed-on: https://review.coreboot.org/c/coreboot/+/32245 Tested-by: build bot (Jenkins) Reviewed-by: Hung-Te Lin Reviewed-by: Julius Werner Reviewed-by: You-Cheng Syu --- src/soc/mediatek/common/include/soc/timer.h | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'src/soc/mediatek/common/include') diff --git a/src/soc/mediatek/common/include/soc/timer.h b/src/soc/mediatek/common/include/soc/timer.h index babcbba561..b58d4d3227 100644 --- a/src/soc/mediatek/common/include/soc/timer.h +++ b/src/soc/mediatek/common/include/soc/timer.h @@ -19,18 +19,21 @@ #include #include -#define GPT4_MHZ 13 +#define GPT_MHZ 13 struct mtk_gpt_regs { - u32 reserved[16]; - u32 gpt4_con; - u32 gpt4_clk; - u32 gpt4_cnt; + u32 reserved1[24]; + u32 gpt6_con; + u32 gpt6_clk; + u32 gpt6_cnt_l; + u32 reserved2[3]; + u32 gpt6_cnt_h; }; -check_member(mtk_gpt_regs, gpt4_con, 0x0040); -check_member(mtk_gpt_regs, gpt4_clk, 0x0044); -check_member(mtk_gpt_regs, gpt4_cnt, 0x0048); +check_member(mtk_gpt_regs, gpt6_con, 0x0060); +check_member(mtk_gpt_regs, gpt6_clk, 0x0064); +check_member(mtk_gpt_regs, gpt6_cnt_l, 0x0068); +check_member(mtk_gpt_regs, gpt6_cnt_h, 0x0078); enum { GPT_CON_EN = 0x01, -- cgit v1.2.3