diff mbox

[v3,5/5] clk/exynos5420: assign dout_pixel id to pixel clock divider

Message ID 1377508383-15185-6-git-send-email-rahul.sharma@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Rahul Sharma Aug. 26, 2013, 9:13 a.m. UTC
dout_pixel is a new ID allocated for pixel clock divider. It is
queried in the driver to pass as the parent to hdmi clock while
switching between parents.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
 Documentation/devicetree/bindings/clock/exynos5420-clock.txt |    5 +++++
 drivers/clk/samsung/clk-exynos5420.c                         |    5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

Comments

Tomasz Figa Aug. 26, 2013, 11:49 p.m. UTC | #1
Hi Rahul,

On Monday 26 of August 2013 14:43:03 Rahul Sharma wrote:
> dout_pixel is a new ID allocated for pixel clock divider. It is
> queried in the driver to pass as the parent to hdmi clock while
> switching between parents.
> 
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> ---
>  Documentation/devicetree/bindings/clock/exynos5420-clock.txt |    5
> +++++ drivers/clk/samsung/clk-exynos5420.c                         |   
> 5 ++++- 2 files changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git
> a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
> b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt index
> 6f16aa8..4c069bd 100644
> --- a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
> +++ b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
> @@ -187,6 +187,11 @@ clock which they consume.
> 
>    mout_hdmi		1024
> 
> +  Divider		ID
> +  ----------------------------
> +
> +  dout_pixel		2048

That's an even bigger hole.

Could you check in the documentation how many muxes are present in the 
clock controller of Exynos5420, add some margin (presumably rounding up to 
some nice value, not necessarily to a power of two) and calculate a more 
reasonable start value for dividers?

Best regards,
Tomasz'

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diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
index 6f16aa8..4c069bd 100644
--- a/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
+++ b/Documentation/devicetree/bindings/clock/exynos5420-clock.txt
@@ -187,6 +187,11 @@  clock which they consume.
 
   mout_hdmi		1024
 
+  Divider		ID
+  ----------------------------
+
+  dout_pixel		2048
+
 Example 1: An example of a clock controller node is listed below.
 
 	clock: clock-controller@0x10010000 {
diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 5f9bc63..e55b223 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -143,6 +143,9 @@  enum exynos5420_clks {
 	/* mux clocks */
 	mout_hdmi = 1024,
 
+	/* divider clocks */
+	dout_pixel = 2048,
+
 	nr_clks,
 };
 
@@ -463,7 +466,7 @@  static struct samsung_div_clock exynos5420_div_clks[] __initdata = {
 	DIV(none, "dout_fimd1", "mout_fimd1", DIV_DISP10, 0, 4),
 	DIV(none, "dout_mipi1", "mout_mipi1", DIV_DISP10, 16, 8),
 	DIV(none, "dout_dp1", "mout_dp1", DIV_DISP10, 24, 4),
-	DIV(none, "dout_hdmi_pixel", "mout_pixel", DIV_DISP10, 28, 4),
+	DIV(dout_pixel, "dout_hdmi_pixel", "mout_pixel", DIV_DISP10, 28, 4),
 
 	/* Audio Block */
 	DIV(none, "dout_maudio0", "mout_maudio0", DIV_MAU, 20, 4),