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 94ea56cff506c769a509c5dd87904c7fe3806a81 upstream.
The Gnawty model Chromebook uses pmc_plt_clk_0 instead of pmc_plt_clk_3 for the mclk, just like the Clapper and Swanky models.
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 Gnawty that was breaking audio support since we were not using the right clock in the cht_bsw_max98090_ti machine driver.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=201787 Cc: stable@vger.kernel.org Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL") Reported-and-tested-by: Jaime Pérez 19.jaime.91@gmail.com 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 @@ -397,6 +397,13 @@ static const struct dmi_system_id cht_ma .driver_data = (void *)QUIRK_PMC_PLT_CLK_0, }, { + /* Gnawty model Chromebook (Acer Chromebook CB3-111) */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "Gnawty"), + }, + .driver_data = (void *)QUIRK_PMC_PLT_CLK_0, + }, + { /* Swanky model Chromebook (Toshiba Chromebook 2) */ .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "Swanky"),