[U-Boot] [PATCH 2/3] mx7: Fix the get_cpu_speed_grade_hz() return values

Fabio Estevam fabio.estevam at nxp.com
Wed Feb 22 15:43:26 UTC 2017


According to the MX7D fuse map the following speed grades are available:

800  MHz
500  MHz
1000 MHz
1200 MHz

So simply return the real frequency that corresponds to the speed grade.

With this change we see on boot:

CPU:   Freescale i.MX7D rev1.2 1000 MHz (running at 792 MHz)

Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
---
 arch/arm/cpu/armv7/mx7/soc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c
index b9fb97b..8cde77b 100644
--- a/arch/arm/cpu/armv7/mx7/soc.c
+++ b/arch/arm/cpu/armv7/mx7/soc.c
@@ -120,11 +120,11 @@ u32 get_cpu_speed_grade_hz(void)
 
 	switch(val) {
 	case OCOTP_TESTER3_SPEED_800MHZ:
-		return 792000000;
+		return 800000000;
 	case OCOTP_TESTER3_SPEED_500MHZ:
 		return 500000000;
 	case OCOTP_TESTER3_SPEED_1GHZ:
-		return 996000000;
+		return 1000000000;
 	}
 	return 0;
 }
-- 
2.7.4



More information about the U-Boot mailing list