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Google/Snow: enable sound hardware clocks 

Set up the clocks used for sound and turn on the sound clock.

Change-Id: Ic59bfa9ae87116299503e6d25aeefba98c842fb8
Signed-off-by: Gabe Black <gabeblack@google.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2587
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
Ronald G. Minnich 2013-03-06 08:50:50 -08:00
parent f4861df1e7
commit 31dc0acd9b
1 changed files with 11 additions and 0 deletions
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11
src/mainboard/google/snow/ramstage.c
View File

@ -19,6 +19,8 @@
#include <console/console.h>
#include <cbmem.h>
#include <cpu/samsung/exynos5250/clk.h>
#include <cpu/samsung/exynos5250/power.h>
void hardwaremain(int boot_complete);
void main(void)
@ -32,5 +34,14 @@ void main(void)
((CONFIG_DRAM_SIZE_MB << 20UL) * CONFIG_NR_DRAM_BANKS) -
CONFIG_COREBOOT_TABLES_SIZE;
const unsigned epll_hz = 192000000;
const unsigned sample_rate = 48000;
const unsigned lr_frame_size = 256;
clock_epll_set_rate(epll_hz);
clock_select_i2s_clk_source();
clock_set_i2s_clk_prescaler(epll_hz, sample_rate * lr_frame_size);
power_enable_xclkout();
hardwaremain(0);
}