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authorRonald G. Minnich <rminnich@gmail.com>2013-03-06 08:50:50 -0800
committerRonald G. Minnich <rminnich@gmail.com>2013-03-06 22:53:19 +0100
commit31dc0acd9b8c3e5d30aa4e64ab1f24fac84bac1a (patch)
tree5a4c40e8e751ebdc9bddaeb4e38a85f5e949457d /src/mainboard
parentf4861df1e749885ec68ea0f17a3589aa6e79d13f (diff)
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>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/snow/ramstage.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mainboard/google/snow/ramstage.c b/src/mainboard/google/snow/ramstage.c
index 5970357512..9f259ef30e 100644
--- a/src/mainboard/google/snow/ramstage.c
+++ b/src/mainboard/google/snow/ramstage.c
@@ -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);
}