openwrt/target/linux/brcm2708/patches-4.4/0264-clk-bcm2835-enable-management-of-PCM-clock.patch

From 53b35c410aed20a1bfce25d4bdec7bb1449292ec Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Mon, 29 Feb 2016 12:51:43 +0000
Subject: [PATCH 264/304] clk: bcm2835: enable management of PCM clock

Enable the PCM clock in the SOC, which is used by the
bcm2835-i2s driver.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
(cherry picked from commit 33b689600f43094a9316a1b582f2286d17bc737b)
---
 drivers/clk/bcm/clk-bcm2835.c       | 7 +++++++
 include/dt-bindings/clock/bcm2835.h | 1 +
 2 files changed, 8 insertions(+)

--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1634,6 +1634,13 @@ static const struct bcm2835_clk_desc clk
 		.div_reg = CM_HSMDIV,
 		.int_bits = 4,
 		.frac_bits = 8),
+	[BCM2835_CLOCK_PCM]	= REGISTER_PER_CLK(
+		.name = "pcm",
+		.ctl_reg = CM_PCMCTL,
+		.div_reg = CM_PCMDIV,
+		.int_bits = 12,
+		.frac_bits = 12,
+		.is_mash_clock = true),
 	[BCM2835_CLOCK_PWM]	= REGISTER_PER_CLK(
 		.name = "pwm",
 		.ctl_reg = CM_PWMCTL,
--- a/include/dt-bindings/clock/bcm2835.h
+++ b/include/dt-bindings/clock/bcm2835.h
@@ -44,3 +44,4 @@
 #define BCM2835_CLOCK_EMMC		28
 #define BCM2835_CLOCK_PERI_IMAGE	29
 #define BCM2835_CLOCK_PWM		30
+#define BCM2835_CLOCK_PCM		31