This patch adds the memory bus node for Exynos4x12 SoC. Exynos4x12 SoC has
two memory bus to translate data between DRAM and eMMC/sub-IPs.
Following list specifies the detailed relation between memory bus clock and DMC
IP in MIF (Memory Interface) block:
- DMC/ACP clock : DMC (Dynamic Memory Controller)
Following list specifies the detailed relation between memory bus clock and
sub-IPs in INT (Internal) block:
- ACLK100 clock : PERIL/PERIR/MFC(PCLK)
- ACLK160 clock : CAM/TV/LCD
- ACLK133 clock : FSYS
- GDL/GDR clock : leftbus/rightbus
- SCLK_MFC clock : MFC
Cc: Kukjin Kim <kg...@kernel.org>
Cc: Myungjoo Ham <myungjoo....@samsung.com>
Cc: Kyungmin Park <kyungmin.p...@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.c...@samsung.com>
Acked-by: Myungjoo Ham <myungjoo....@samsung.com>
---
arch/arm/boot/dts/exynos4x12.dtsi | 121 ++++++++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4x12.dtsi
b/arch/arm/boot/dts/exynos4x12.dtsi
index 93b7040..44f6272 100644
--- a/arch/arm/boot/dts/exynos4x12.dtsi
+++ b/arch/arm/boot/dts/exynos4x12.dtsi
@@ -31,6 +31,127 @@
mshc0 = &mshc_0;
};
+ memory_bus_mif: memory_bus@0 {
+ compatible = "samsung,exynos-memory-bus";
+
+ operating-points = <
+ 400000 1100000
+ 200000 1000000
+ 160000 950000
+ 133000 950000
+ 100000 950000>;
+ status = "disabled";
+
+ blocks {
+ dmc_block: memory_bus_block1 {
+ clocks = <&clock CLK_DIV_DMC>;
+ clock-names = "memory-bus";
+ frequency = <
+ 400000
+ 200000
+ 160000
+ 133000
+ 100000>;
+ };
+
+ acp_block: memory_bus_block2 {
+ clocks = <&clock CLK_DIV_ACP>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 160000
+ 133000
+ 133000
+ 100000>;
+ };
+
+ c2c_block: memory_bus_block3 {
+ clocks = <&clock CLK_DIV_C2C>;
+ clock-names = "memory-bus";
+ frequency = <
+ 400000
+ 200000
+ 160000
+ 133000
+ 100000>;
+ };
+ };
+ };
+
+ memory_bus_int: memory_bus@1 {
+ compatible = "samsung,exynos-memory-bus";
+
+ operating-points = <
+ 200000 1000000
+ 160000 950000
+ 133000 925000
+ 100000 900000>;
+
+ status = "disabled";
+
+ blocks {
+ peri_block: memory_bus_block1 {
+ clocks = <&clock CLK_ACLK100>;
+ clock-names = "memory-bus";
+ frequency = <
+ 100000
+ 100000
+ 100000
+ 100000>;
+ };
+
+ fsys_block: memory_bus_block2 {
+ clocks = <&clock CLK_ACLK133>;
+ clock-names = "memory-bus";
+ frequency = <
+ 133000
+ 133000
+ 100000
+ 100000>;
+ };
+
+ display_block: memory_bus_block3 {
+ clocks = <&clock CLK_ACLK160>;
+ clock-names = "memory-bus";
+ frequency = <
+ 160000
+ 160000
+ 133000
+ 100000>;
+ };
+
+ leftbus_block: memory_bus_block4 {
+ clocks = <&clock CLK_DIV_GDL>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 160000
+ 133000
+ 100000>;
+ };
+
+ rightbus_block: memory_bus_block5 {
+ clocks = <&clock CLK_DIV_GDR>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 160000
+ 133000
+ 100000>;
+ };
+
+ mfc_block: memory_bus_block6 {
+ clocks = <&clock CLK_SCLK_MFC>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 160000
+ 133000
+ 100000>;
+ };
+ };
+ };
+
sysram@02020000 {
compatible = "mmio-sram";
reg = <0x02020000 0x40000>;
--
1.8.5.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
