diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0740-rpi-wm8804-soundcard-Fixed-MCLKDIV-for-Allo-Digione.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0740-rpi-wm8804-soundcard-Fixed-MCLKDIV-for-Allo-Digione.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0740-rpi-wm8804-soundcard-Fixed-MCLKDIV-for-Allo-Digione.patch b/target/linux/brcm2708/patches-4.19/950-0740-rpi-wm8804-soundcard-Fixed-MCLKDIV-for-Allo-Digione.patch new file mode 100644 index 0000000000..952e26664c --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0740-rpi-wm8804-soundcard-Fixed-MCLKDIV-for-Allo-Digione.patch @@ -0,0 +1,42 @@ +From 09ad53f0267e4b5433c27c77b3945d584ac0a6ba Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 22 Oct 2019 08:47:29 +0100 +Subject: [PATCH] rpi-wm8804-soundcard: Fixed MCLKDIV for Allo Digione + +The Allo Digione board wants a fixed MCLKDIV of 256. + +See: https://github.com/raspberrypi/linux/issues/3296 + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + sound/soc/bcm/rpi-wm8804-soundcard.c | 10 +++++++--- + 1 file changed, 7 insertions(+), 3 deletions(-) + +--- a/sound/soc/bcm/rpi-wm8804-soundcard.c ++++ b/sound/soc/bcm/rpi-wm8804-soundcard.c +@@ -66,6 +66,11 @@ static struct gpio_desc *snd_clk44gpio; + static struct gpio_desc *snd_clk48gpio; + static int wm8804_samplerate = 0; + ++/* Forward declarations */ ++static struct snd_soc_dai_link snd_allo_digione_dai[]; ++static struct snd_soc_card snd_rpi_wm8804; ++ ++ + #define CLK_44EN_RATE 22579200UL + #define CLK_48EN_RATE 24576000UL + +@@ -90,11 +95,10 @@ static unsigned int snd_rpi_wm8804_enabl + static void snd_rpi_wm8804_clk_cfg(unsigned int samplerate, + struct wm8804_clk_cfg *clk_cfg) + { +- clk_cfg->mclk_freq = 0; +- clk_cfg->mclk_div = 1; + clk_cfg->sysclk_freq = 27000000; + +- if (samplerate <= 96000) { ++ if (samplerate <= 96000 || ++ snd_rpi_wm8804.dai_link == snd_allo_digione_dai) { + clk_cfg->mclk_freq = samplerate * 256; + clk_cfg->mclk_div = WM8804_MCLKDIV_256FS; + } else { |