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| author | Peng Fan <peng.fan@nxp.com> | 2018-12-12 02:47:58 -0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2020-05-01 13:46:21 +0200 |
| commit | 47586a4a55e39508bb29c1f2feb5a3b048dd0351 (patch) | |
| tree | 37c95facb4c6eecceed6e0a4b5c9ee8421814648 /arch/arm | |
| parent | c9a1a24be55b3348afc2b5a356f9ae36f7af0585 (diff) | |
| download | u-boot-47586a4a55e39508bb29c1f2feb5a3b048dd0351.zip u-boot-47586a4a55e39508bb29c1f2feb5a3b048dd0351.tar.gz u-boot-47586a4a55e39508bb29c1f2feb5a3b048dd0351.tar.bz2 | |
imx8mn: Update speed grade
imx8mn speed grade fuse uses new definitions as below. So have
to update get_cpu_speed_grade_hz function to match it.
SPEED_GRADE[5:4] SPEED_GRADE[3:0] MHz
xx 0000 2300
xx 0001 2200
xx 0010 2100
xx 0011 2000
xx 0100 1900
xx 0101 1800
xx 0110 1700
xx 0111 1600
xx 1000 1500
xx 1001 1400
xx 1010 1300
xx 1011 1200
xx 1100 1100
xx 1101 1000
xx 1110 900
xx 1111 800
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-imx/cpu.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index 55e3539..5b979cc 100644 --- a/arch/arm/mach-imx/cpu.c +++ b/arch/arm/mach-imx/cpu.c @@ -314,6 +314,7 @@ enum cpu_speed { OCOTP_TESTER3_SPEED_GRADE1, OCOTP_TESTER3_SPEED_GRADE2, OCOTP_TESTER3_SPEED_GRADE3, + OCOTP_TESTER3_SPEED_GRADE4, }; u32 get_cpu_speed_grade_hz(void) @@ -326,7 +327,16 @@ u32 get_cpu_speed_grade_hz(void) val = readl(&fuse->tester3); val >>= OCOTP_TESTER3_SPEED_SHIFT; - val &= 0x3; + + if (is_imx8mn()) { + val &= 0xf; + return 2300000000 - val * 100000000; + } + + if (is_imx8mm()) + val &= 0x7; + else + val &= 0x3; switch(val) { case OCOTP_TESTER3_SPEED_GRADE0: @@ -337,6 +347,8 @@ u32 get_cpu_speed_grade_hz(void) return (is_mx7() ? 1000000000 : (is_imx8mq() ? 1300000000 : 1600000000)); case OCOTP_TESTER3_SPEED_GRADE3: return (is_mx7() ? 1200000000 : (is_imx8mq() ? 1500000000 : 1800000000)); + case OCOTP_TESTER3_SPEED_GRADE4: + return 2000000000; } return 0; |