[PATCH 4.20 049/145] ASoC: intel: cht_bsw_max98090_ti: Add pmc_plt_clk_0 quirk for Chromebook Clapper

From: Greg Kroah-Hartman
Date: Mon Jan 07 2019 - 07:36:10 EST

4.20-stable review patch. If anyone has any objections, please let me know.


From: Hans de Goede <hdegoede@xxxxxxxxxx>

commit 984bfb398a3af6fa9b7e80165e524933b0616686 upstream.

The Clapper model Chromebook uses pmc_plt_clk_0 instead of pmc_plt_clk_3
for the mclk, just like the Swanky model.

This commit adds a DMI based quirk for this.

This fixing audio no longer working on these devices after
commit 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
that commit fixes us unnecessary keeping unused clocks on, but in case of
the Clapper that was breaking audio support since we were not using the
right clock in the cht_bsw_max98090_ti machine driver.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

sound/soc/intel/boards/cht_bsw_max98090_ti.c | 7 +++++++
1 file changed, 7 insertions(+)

--- a/sound/soc/intel/boards/cht_bsw_max98090_ti.c
+++ b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
@@ -390,6 +390,13 @@ static struct snd_soc_card snd_soc_card_

static const struct dmi_system_id cht_max98090_quirk_table[] = {
+ /* Clapper model Chromebook */
+ .matches = {
+ },
+ .driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
+ },
+ {
/* Swanky model Chromebook (Toshiba Chromebook 2) */
.matches = {