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| author | Bryan O'Donoghue <bodonoghue@codehermit.ie> | 2008-02-17 22:57:47 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-03-25 22:28:34 +0100 |
| commit | 77ff7b7444ceb8022b46114f3d0b6d18e2fd1138 (patch) | |
| tree | bfa2e231bae821ff19e0988f8760b6bc0349ab28 /cpu/mpc8xx/speed.c | |
| parent | 9c666a7db0b2285a270c68810889ce7d5dba304b (diff) | |
| download | u-boot-imx-77ff7b7444ceb8022b46114f3d0b6d18e2fd1138.zip u-boot-imx-77ff7b7444ceb8022b46114f3d0b6d18e2fd1138.tar.gz u-boot-imx-77ff7b7444ceb8022b46114f3d0b6d18e2fd1138.tar.bz2 | |
8xx: Update OF support on 8xx
This patch does some shifting around of OF support on 8xx.
Signed-off-by: Bryan O'Donoghue <bodonoghue@codehermit.ie>
Diffstat (limited to 'cpu/mpc8xx/speed.c')
| -rw-r--r-- | cpu/mpc8xx/speed.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/cpu/mpc8xx/speed.c b/cpu/mpc8xx/speed.c index 11b0893..070babc 100644 --- a/cpu/mpc8xx/speed.c +++ b/cpu/mpc8xx/speed.c @@ -174,6 +174,27 @@ unsigned long measure_gclk(void) #endif +void get_brgclk(uint sccr) +{ + uint divider = 0; + + switch((sccr&SCCR_DFBRG11)>>11){ + case 0: + divider = 1; + break; + case 1: + divider = 4; + break; + case 2: + divider = 16; + break; + case 3: + divider = 64; + break; + } + gd->brg_clk = gd->cpu_clk/divider; +} + #if !defined(CONFIG_8xx_CPUCLK_DEFAULT) /* @@ -223,6 +244,8 @@ int get_clocks (void) gd->bus_clk = gd->cpu_clk / 2; } + get_brgclk(sccr); + return (0); } @@ -254,6 +277,8 @@ int get_clocks_866 (void) gd->cpu_clk = measure_gclk (); #endif + get_brgclk(immr->im_clkrst.car_sccr); + /* if cpu clock <= 66 MHz then set bus division factor to 1, * otherwise set it to 2 */ |