This patch adds the memory bus node for Exynos3250 SoC. Exynos3250 has following memory buses 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 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
- ACLK160 clock : LCD0
- ACLK200 clock : FSYS
- ACLK266 clock : ISP
- 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: Kyungmin Park <kyungmin.p...@samsung.com>
Acked-by: Myungjoo Ham <myungjoo....@samsung.com>
---
arch/arm/boot/dts/exynos3250.dtsi | 125 ++++++++++++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250.dtsi
b/arch/arm/boot/dts/exynos3250.dtsi
index 9ed1260..3eaed53 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -99,6 +99,131 @@
};
};
+ memory_bus_mif: memory_bus@0 {
+ compatible = "samsung,exynos-memory-bus";
+
+ operating-points = <
+ 400000 875000
+ 200000 800000
+ 133000 800000
+ 100000 800000
+ 50000 800000>;
+ status = "disabled";
+
+ blocks {
+ dmc_block: memory_bus_block1 {
+ clocks = <&cmu_dmc CLK_DIV_DMC>;
+ clock-names = "memory-bus";
+ frequency = <
+ 400000
+ 200000
+ 133000
+ 100000
+ 50000>;
+ };
+ };
+ };
+
+ memory_bus_int: memory_bus@1 {
+ compatible = "samsung,exynos-memory-bus";
+
+ operating-points = <
+ 400000 950000
+ 200000 950000
+ 133000 925000
+ 100000 850000
+ 80000 850000
+ 50000 850000>;
+
+ status = "disabled";
+
+ blocks {
+ peril_block: memory_bus_block1 {
+ clocks = <&cmu CLK_DIV_ACLK_100>;
+ clock-names = "memory-bus";
+ frequency = <
+ 100000
+ 100000
+ 100000
+ 100000
+ 50000
+ 50000>;
+ };
+
+ lcd0_block: memory_bus_block2 {
+ clocks = <&cmu CLK_DIV_ACLK_160>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 160000
+ 100000
+ 80000
+ 80000
+ 50000>;
+ };
+
+ fsys_block: memory_bus_block3 {
+ clocks = <&cmu CLK_DIV_ACLK_200>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 200000
+ 100000
+ 80000
+ 50000
+ 50000>;
+ };
+
+ isp_block: memory_bus_block4 {
+ clocks = <&cmu CLK_DIV_ACLK_266>;
+ clock-names = "memory-bus";
+ frequency = <
+ 300000
+ 200000
+ 133000
+ 100000
+ 50000
+ 50000>;
+ };
+
+ leftbus_block: memory_bus_block5 {
+ clocks = <&cmu CLK_DIV_GDL>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 200000
+ 133000
+ 100000
+ 100000
+ 100000>;
+ };
+
+ rightbus_block: memory_bus_block6 {
+ clocks = <&cmu CLK_DIV_GDR>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 200000
+ 133000
+ 100000
+ 100000
+ 100000>;
+ };
+
+ mfc_block: memory_bus_block7 {
+ clocks = <&cmu CLK_SCLK_MFC>;
+ clock-names = "memory-bus";
+ frequency = <
+ 200000
+ 200000
+ 200000
+ 133000
+ 100000
+ 80000>;
+ };
+ };
+ };
+
sysram@02020000 {
compatible = "mmio-sram";
reg = <0x02020000 0x40000>;
--
1.8.5.5
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