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Commit a6df3a62 authored by Ujwal Patel's avatar Ujwal Patel Committed by Gerrit - the friendly Code Review server
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msm: mdss: move mdss fudge factors to device-tree 



MDSS has a common driver for multiple chip-sets. Each of these chip-sets
can have their own fudge factors for calculations of resource demand.
Move these pre-defined fudge factors to device-tree since they are
platform dependent.

Change-Id: Ia558a2ad0a096b49cdabf41dd25cf30c843149c4
Signed-off-by: default avatarUjwal Patel <ujwalp@codeaurora.org>
parent 7182485d

Documentation/devicetree/bindings/fb/mdss-mdp.txt

+26 −0
Original line number Diff line number Diff line
@@ -185,6 +185,26 @@ Optional properties: 
				any, following first one denotes indexes of MMBs

				to that RGB pipe.



Fudge Factors:			Fudge factors are used to boost demand for

				resources like bus bandswidth, clk rate etc. to

				overcome system inefficiencies and avoid any

				glitches. These fudge factors are expressed in

				terms of numerator and denominator. First value

				is numerator followed by denominator. They all

				are optional but highly recommended.

				Ex:

				x = value to be fudged

				a = numerator, default value is 1

				b = denominator, default value is 1

				FUDGE(x, a, b) = ((x * a) / b)

- qcom,mdss-ib-factor:		This fudge factor is applied to calculated ib

				values in default conditions.

- qcom,mdss-high-ib-factor:	This fudge factor is applied to calculated ib

				values. Use of this factor is determined by the

				driver and open new use-cases.

- qcom,mdss-clk-factor:		This fudge factor is applied to calculated mdp

				clk rate in default conditions.



Optional subnodes:

Child nodes representing the frame buffer virtual devices.
@@ -242,6 +262,12 @@ Example: 
			<22 512 0 6400000>, <23 512 0 6400000>,

			<22 512 0 6400000>, <23 512 0 6400000>;



		/* Fudge factors */

		qcom,mdss-ab-factor = <2 1>;		/* 2 times    */

		qcom,mdss-ib-factor = <3 2>;		/* 1.5 times  */

		qcom,mdss-high-ib-factor = <2 1>;	/* 2 times    */

		qcom,mdss-clk-factor = <5 4>;		/* 1.25 times */



		qcom,max-clk-rate = <320000000>;

		qcom,vbif-settings = <0x0004 0x00000001>,

				     <0x00D8 0x00000707>;

arch/arm/boot/dts/apq8084-mdss.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -28,6 +28,12 @@ 
			<22 512 0 6400000>, <23 512 0 6400000>,

			<22 512 0 6400000>, <23 512 0 6400000>;



		/* Fudge factors */

		qcom,mdss-ab-factor = <2 1>;		/* 2 times    */

		qcom,mdss-ib-factor = <3 2>;		/* 1.5 times  */

		qcom,mdss-high-ib-factor = <2 1>;	/* 2 times    */

		qcom,mdss-clk-factor = <105 100>;	/* 1.05 times */



		qcom,max-clk-rate = <320000000>;



		qcom,mdss-pipe-vig-off = <0x00001200 0x00001600

arch/arm/boot/dts/msm8226-mdss.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -28,6 +28,12 @@ 
			<22 512 0 6400000>,

			<22 512 0 6400000>;



		/* Fudge factors */

		qcom,mdss-ab-factor = <2 1>;		/* 2 times    */

		qcom,mdss-ib-factor = <3 2>;		/* 1.5 times  */

		qcom,mdss-high-ib-factor = <2 1>;	/* 2 times    */

		qcom,mdss-clk-factor = <5 4>;		/* 1.25 times */



		qcom,max-clk-rate = <200000000>;

		qcom,mdss-pipe-vig-off = <0x00001200>;

		qcom,mdss-pipe-rgb-off = <0x00001E00>;

arch/arm/boot/dts/msm8974-mdss.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -28,6 +28,12 @@ 
			<22 512 0 6400000>,

			<22 512 0 6400000>;



		/* Fudge factors */

		qcom,mdss-ab-factor = <2 1>;		/* 2 times    */

		qcom,mdss-ib-factor = <3 2>;		/* 1.5 times  */

		qcom,mdss-high-ib-factor = <2 1>;	/* 2 times    */

		qcom,mdss-clk-factor = <5 4>;		/* 1.25 times */



		qcom,max-clk-rate = <320000000>;

		qcom,mdss-pipe-vig-off = <0x00001200 0x00001600

					       0x00001A00>;

arch/arm/boot/dts/msmsamarium-mdss.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -28,6 +28,12 @@ 
			<22 512 0 6400000>,

			<22 512 0 6400000>;



		/* Fudge factors */

		qcom,mdss-ab-factor = <2 1>;		/* 2 times    */

		qcom,mdss-ib-factor = <3 2>;		/* 1.5 times  */

		qcom,mdss-high-ib-factor = <2 1>;	/* 2 times    */

		qcom,mdss-clk-factor = <105 100>;	/* 1.05 times */



		qcom,max-clk-rate = <320000000>;

		qcom,mdss-pipe-vig-off = <0x00001200 0x00001600>;

		qcom,mdss-pipe-rgb-off = <0x00001E00 0x00002200>;