[PATCH v2 14/19] ARM: dts: Add bus nodes using VDD_INT for Exynos4x12

Chanwoo Choi
2015-12-09T04:09:53Z

This patch adds the bus noes 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>
---
arch/arm/boot/dts/exynos4x12.dtsi | 112 ++++++++++++++++++++++++++++++++++++++
1 file changed, 112 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4x12.dtsi b/arch/arm/boot/dts/exynos4x12.dtsi
index 3bcf0939755e..8bc4aee156b5 100644
--- a/arch/arm/boot/dts/exynos4x12.dtsi
+++ b/arch/arm/boot/dts/exynos4x12.dtsi
@@ -354,6 +354,118 @@
opp-microvolt = <950000>;
};
};
+
+ 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;
+
+ opp00 {
+ opp-hz = /bits/ 64 <100000000>;
+ opp-microvolt = <900000>;
+ };
+ opp01 {
+ opp-hz = /bits/ 64 <134000000>;
+ opp-microvolt = <925000>;
+ };
+ opp02 {
+ opp-hz = /bits/ 64 <160000000>;
+ opp-microvolt = <950000>;
+ };
+ opp03 {
+ opp-hz = /bits/ 64 <200000000>;
+ opp-microvolt = <1000000>;
+ };
+ };
+
+ bus_display_opp_table: opp_table4 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp00 {
+ opp-hz = /bits/ 64 <160000000>;
+ opp-microvolt = <950000>;
+ };
+ opp01 {
+ opp-hz = /bits/ 64 <200000000>;
+ opp-microvolt = <1000000>;
+ };
+ };
+
+ bus_fsys_opp_table: opp_table5 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp00 {
+ opp-hz = /bits/ 64 <100000000>;
+ opp-microvolt = <900000>;
+ };
+ opp01 {
+ opp-hz = /bits/ 64 <134000000>;
+ opp-microvolt = <925000>;
+ };
+ };
+
+ bus_peri_opp_table: opp_table6 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp00 {
+ opp-hz = /bits/ 64 <50000000>;
+ opp-microvolt = <900000>;
+ };
+ opp01 {
+ opp-hz = /bits/ 64 <100000000>;
+ opp-microvolt = <925000>;
+ };
+ };
};

&combiner {
--
1.9.1