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| author | Mark Jackson <mpfj-list@mimc.co.uk> | 2013-03-04 01:27:20 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-03-22 10:57:00 -0400 |
| commit | fc33705e66cc2c753026f04f92555ad00b709f11 (patch) | |
| tree | 4d1b003af078b1745ae37f5320ccd7d0722d9122 | |
| parent | f35034fe16871a156a9898ac6ed5a9987d91ea05 (diff) | |
| download | u-boot-imx-fc33705e66cc2c753026f04f92555ad00b709f11.zip u-boot-imx-fc33705e66cc2c753026f04f92555ad00b709f11.tar.gz u-boot-imx-fc33705e66cc2c753026f04f92555ad00b709f11.tar.bz2 | |
Allow AM335x MPU core clock speed to be specified in the board config file
Allow AM335x MPU core clock speed to be specified in the board config file.
To use, add the following to the board's config file:-
#define CONFIG_SYS_MPUCLK <desired clock freq in MHz>
Signed-off-by: Mark Jackson <mpfj@newflow.co.uk>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
| -rw-r--r-- | README | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/clocks_am33xx.h | 7 |
2 files changed, 9 insertions, 2 deletions
@@ -3878,6 +3878,10 @@ Low Level (hardware related) configuration options: If defined, the x86 reset vector code is included. This is not needed when U-Boot is running from Coreboot. +- CONFIG_SYS_MPUCLK + Defines the MPU clock speed (in MHz). + + NOTE : currently only supported on AM335x platforms. Freescale QE/FMAN Firmware Support: ----------------------------------- diff --git a/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h b/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h index d748dd2..2d96007 100644 --- a/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h +++ b/arch/arm/include/asm/arch-am33xx/clocks_am33xx.h @@ -21,8 +21,11 @@ #define OSC (V_OSCK/1000000) -/* MAIN PLL Fdll = 550 MHZ, */ -#define MPUPLL_M 550 +/* MAIN PLL Fdll = 550 MHz, by default */ +#ifndef CONFIG_SYS_MPUCLK +#define CONFIG_SYS_MPUCLK 550 +#endif +#define MPUPLL_M CONFIG_SYS_MPUCLK #define MPUPLL_N (OSC-1) #define MPUPLL_M2 1 |