ARM: dts: exynos: Add bus nodes using VDD_INT for Exynos4x12

This patch adds the bus nodes using VDD_INT for Exynos4x12 SoC.
Exynos4x12 has the following AXI buses to translate data between
DRAM and sub-blocks.

Following list specifies the detailed relation between DRAM and sub-blocks:
- ACLK100 clock for PERIL/PERIR/MFC(PCLK)
- ACLK160 clock for CAM/TV/LCD
: The minimum clock of ACLK160 should be over 160MHz.
  When drop the clock under 160MHz, show the broken image.
- ACLK133 clock for FSYS
- GDL clock for LEFTBUS
- GDR clock for RIGHTBUS
- SCLK_MFC clock for MFC

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
[m.reichl and linux.amoon: Tested it on exynos4412-odroidu3 board]
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

diff --git a/arch/arm/boot/dts/exynos4x12.dtsi b/arch/arm/boot/dts/exynos4x12.dtsi
index 99a0f4c..e517310 100644 (file)
--- a/arch/arm/boot/dts/exynos4x12.dtsi
+++ b/arch/arm/boot/dts/exynos4x12.dtsi
@@ -349,6 +349,112 @@
                        opp-hz = /bits/ 64 <267000000>;
                };
        };
+
+       bus_leftbus: bus_leftbus {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_DIV_GDL>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_leftbus_opp_table>;
+               status = "disabled";
+       };
+
+       bus_rightbus: bus_rightbus {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_DIV_GDR>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_leftbus_opp_table>;
+               status = "disabled";
+       };
+
+       bus_display: bus_display {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_ACLK160>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_display_opp_table>;
+               status = "disabled";
+       };
+
+       bus_fsys: bus_fsys {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_ACLK133>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_fsys_opp_table>;
+               status = "disabled";
+       };
+
+       bus_peri: bus_peri {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_ACLK100>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_peri_opp_table>;
+               status = "disabled";
+       };
+
+       bus_mfc: bus_mfc {
+               compatible = "samsung,exynos-bus";
+               clocks = <&clock CLK_SCLK_MFC>;
+               clock-names = "bus";
+               operating-points-v2 = <&bus_leftbus_opp_table>;
+               status = "disabled";
+       };
+
+       bus_leftbus_opp_table: opp_table3 {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp@100000000 {
+                       opp-hz = /bits/ 64 <100000000>;
+                       opp-microvolt = <900000>;
+               };
+               opp@134000000 {
+                       opp-hz = /bits/ 64 <134000000>;
+                       opp-microvolt = <925000>;
+               };
+               opp@160000000 {
+                       opp-hz = /bits/ 64 <160000000>;
+                       opp-microvolt = <950000>;
+               };
+               opp@200000000 {
+                       opp-hz = /bits/ 64 <200000000>;
+                       opp-microvolt = <1000000>;
+               };
+       };
+
+       bus_display_opp_table: opp_table4 {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp@160000000 {
+                       opp-hz = /bits/ 64 <160000000>;
+               };
+               opp@200000000 {
+                       opp-hz = /bits/ 64 <200000000>;
+               };
+       };
+
+       bus_fsys_opp_table: opp_table5 {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp@100000000 {
+                       opp-hz = /bits/ 64 <100000000>;
+               };
+               opp@134000000 {
+                       opp-hz = /bits/ 64 <134000000>;
+               };
+       };
+
+       bus_peri_opp_table: opp_table6 {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp@50000000 {
+                       opp-hz = /bits/ 64 <50000000>;
+               };
+               opp@100000000 {
+                       opp-hz = /bits/ 64 <100000000>;
+               };
+       };
 };
 
 &combiner {