brcm2708: add linux 4.19 support

Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0412-ASoC-tlv320aic32x4-Restructure-set_dai_sysclk.patch b/target/linux/brcm2708/patches-4.19/950-0412-ASoC-tlv320aic32x4-Restructure-set_dai_sysclk.patch
new file mode 100644
index 0000000000..ff61edf97e
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0412-ASoC-tlv320aic32x4-Restructure-set_dai_sysclk.patch
@@ -0,0 +1,51 @@
+From dc848cfb79aa1a4cea301c388e920e4205ac791a Mon Sep 17 00:00:00 2001
+From: Annaliese McDermond <nh6z@nh6z.net>
+Date: Thu, 21 Mar 2019 17:58:52 -0700
+Subject: [PATCH 412/703] ASoC: tlv320aic32x4: Restructure set_dai_sysclk
+
+commit aa6a60f7be925210d5156f0e8025f3afe1f4f54d upstream.
+
+The sysclk is now managed by the CCF.  Change this function
+to merely find the system clock and set it using
+clk_set_rate.
+
+Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
+Signed-off-by: Mark Brown <broonie@kernel.org>
+---
+ sound/soc/codecs/tlv320aic32x4.c | 17 ++++++-----------
+ 1 file changed, 6 insertions(+), 11 deletions(-)
+
+--- a/sound/soc/codecs/tlv320aic32x4.c
++++ b/sound/soc/codecs/tlv320aic32x4.c
+@@ -49,7 +49,6 @@
+ 
+ struct aic32x4_priv {
+ 	struct regmap *regmap;
+-	u32 sysclk;
+ 	u32 power_cfg;
+ 	u32 micpga_routing;
+ 	bool swapdacs;
+@@ -569,17 +568,13 @@ static int aic32x4_set_dai_sysclk(struct
+ 				  int clk_id, unsigned int freq, int dir)
+ {
+ 	struct snd_soc_component *component = codec_dai->component;
+-	struct aic32x4_priv *aic32x4 = snd_soc_component_get_drvdata(component);
++	struct clk *mclk;
++	struct clk *pll;
+ 
+-	switch (freq) {
+-	case 12000000:
+-	case 24000000:
+-	case 25000000:
+-		aic32x4->sysclk = freq;
+-		return 0;
+-	}
+-	printk(KERN_ERR "aic32x4: invalid frequency to set DAI system clock\n");
+-	return -EINVAL;
++	pll = devm_clk_get(component->dev, "pll");
++	mclk = clk_get_parent(pll);
++
++	return clk_set_rate(mclk, freq);
+ }
+ 
+ static int aic32x4_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)