commit 3f6822a01196d5058efaaa62027d7ede4ac04539
author Andres Oportus <andresoportus@google.com> Sat May 18 05:31:49 2019 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> Sat May 18 05:31:49 2019 +0000
tree 3e475219eabb0d7fa2c93a7fdacd41e915533c3d
parent 42148c1862d305e7934e19fbedf81e1251a4f4a5

[sherlock][audio] Change MCLK selection

For Astro it was found empirically that audio is more reliable when
MCLK id ("A", "B" or "C") matches the TDM engine id (some boards would
fail to make any sound), see:
https://fuchsia-review.googlesource.com/c/fuchsia/+/269498.
Since Sherlock is based on an iteration of the SOC used on Astro,
we also change the MCLK id to match Sherlock's TDM engine used.

Test: audio uapp playing a tone and recording on Sherlock.
Change-Id: I6f59a3bf22b3c50d6f8d329ad1aae498e6752aae

zircon/system/dev/audio/sherlock-tdm-output/audio-stream-out.cpp

diff --git a/zircon/system/dev/audio/sherlock-tdm-output/audio-stream-out.cpp b/zircon/system/dev/audio/sherlock-tdm-output/audio-stream-out.cpp
index 0e38fd1..919332d1 100644
--- a/zircon/system/dev/audio/sherlock-tdm-output/audio-stream-out.cpp
+++ b/zircon/system/dev/audio/sherlock-tdm-output/audio-stream-out.cpp
@@ -119,7 +119,7 @@
     if (status != ZX_OK) {
         return status;
     }
-    aml_audio_ = AmlTdmDevice::Create(*std::move(mmio), HIFI_PLL, TDM_OUT_C, FRDDR_A, MCLK_A);
+    aml_audio_ = AmlTdmDevice::Create(*std::move(mmio), HIFI_PLL, TDM_OUT_C, FRDDR_A, MCLK_C);
     if (aml_audio_ == nullptr) {
         zxlogf(ERROR, "%s failed to create tdm device\n", __func__);
         return ZX_ERR_NO_MEMORY;