linux-kernel - [PATCH 5/6] clk: exynos-audss: add support for Exynos 5420

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Date:	Fri, 20 Sep 2013 14:13:56 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	linux-samsung-soc@...r.kernel.org
Cc:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	Grant Likely <grant.likely@...aro.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Rahul Sharma <rahul.sharma@...sung.com>,
	Leela Krishna Amudala <l.krishna@...sung.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Tomasz Figa <t.figa@...sung.com>,
	Tushar Behera <tushar.behera@...aro.org>,
	Yadwinder Singh Brar <yadi.brar@...sung.com>,
	Doug Anderson <dianders@...omium.org>,
	Padmavathi Venna <padma.v@...sung.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Andrew Bresticker <abrestic@...omium.org>
Subject: [PATCH 5/6] clk: exynos-audss: add support for Exynos 5420

The AudioSS block on Exynos 5420 has an additional clock gate for the
ADMA bus clock.

Signed-off-by: Andrew Bresticker <abrestic@...omium.org>
---
 Documentation/devicetree/bindings/clock/clk-exynos-audss.txt | 7 +++++--
 drivers/clk/samsung/clk-exynos-audss.c                       | 8 ++++++++
 include/dt-bindings/clk/exynos-audss-clk.h                   | 3 ++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt b/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt
index d51a2f9..a10c648 100644
--- a/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt
+++ b/Documentation/devicetree/bindings/clock/clk-exynos-audss.txt
@@ -8,8 +8,10 @@ Required Properties:
 
 - compatible: should be one of the following:
   - "samsung,exynos4210-audss-clock" - controller compatible with all Exynos4 SoCs.
-  - "samsung,exynos5250-audss-clock" - controller compatible with all Exynos5 SoCs.
-
+  - "samsung,exynos5250-audss-clock" - controller compatible with Exynos5250
+    SoCs.
+  - "samsung,exynos5420-audss-clock" - controller compatible with Exynos5420
+    SoCs.
 - reg: physical base address and length of the controller's register set.
 
 - #clock-cells: should be 1.
@@ -51,6 +53,7 @@ i2s_bus         6
 sclk_i2s        7
 pcm_bus         8
 sclk_pcm        9
+adma            10      Exynos5420
 
 Example 1: An example of a clock controller node using the default input
 	   clock names is listed below.
diff --git a/drivers/clk/samsung/clk-exynos-audss.c b/drivers/clk/samsung/clk-exynos-audss.c
index aac5342..07c8dbd 100644
--- a/drivers/clk/samsung/clk-exynos-audss.c
+++ b/drivers/clk/samsung/clk-exynos-audss.c
@@ -145,6 +145,13 @@ static int exynos_audss_clk_probe(struct platform_device *pdev)
 				sclk_pcm_p, CLK_SET_RATE_PARENT,
 				reg_base + ASS_CLK_GATE, 5, 0, &lock);
 
+	if (of_device_is_compatible(pdev->dev.of_node,
+					"samsung,exynos5420-audss-clock")) {
+		clk_table[EXYNOS_ADMA] = clk_register_gate(NULL, "adma",
+				"dout_srp", CLK_SET_RATE_PARENT,
+				reg_base + ASS_CLK_GATE, 9, 0, &lock);
+	}
+
 #ifdef CONFIG_PM_SLEEP
 	register_syscore_ops(&exynos_audss_clk_syscore_ops);
 #endif
@@ -164,6 +171,7 @@ static int exynos_audss_clk_remove(struct platform_device *pdev)
 static const struct of_device_id exynos_audss_clk_of_match[] = {
 	{ .compatible = "samsung,exynos4210-audss-clock", },
 	{ .compatible = "samsung,exynos5250-audss-clock", },
+	{ .compatible = "samsung,exynos5420-audss-clock", },
 	{},
 };
 
diff --git a/include/dt-bindings/clk/exynos-audss-clk.h b/include/dt-bindings/clk/exynos-audss-clk.h
index 8279f42..0ae6f5a 100644
--- a/include/dt-bindings/clk/exynos-audss-clk.h
+++ b/include/dt-bindings/clk/exynos-audss-clk.h
@@ -19,7 +19,8 @@
 #define EXYNOS_SCLK_I2S	7
 #define EXYNOS_PCM_BUS		8
 #define EXYNOS_SCLK_PCM	9
+#define EXYNOS_ADMA		10
 
-#define EXYNOS_AUDSS_MAX_CLKS	10
+#define EXYNOS_AUDSS_MAX_CLKS	11
 
 #endif
-- 
1.8.4

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