4.20-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
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@vger.kernel.org Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL") Signed-off-by: Hans de Goede hdegoede@redhat.com Acked-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 = { + DMI_MATCH(DMI_PRODUCT_NAME, "Clapper"), + }, + .driver_data = (void *)QUIRK_PMC_PLT_CLK_0, + }, + { /* Swanky model Chromebook (Toshiba Chromebook 2) */ .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "Swanky"),