summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/memory-controllers/exynos5422-dmc.txt
diff options
context:
space:
mode:
Diffstat (limited to 'dts/Bindings/memory-controllers/exynos5422-dmc.txt')
-rw-r--r--dts/Bindings/memory-controllers/exynos5422-dmc.txt84
1 files changed, 0 insertions, 84 deletions
diff --git a/dts/Bindings/memory-controllers/exynos5422-dmc.txt b/dts/Bindings/memory-controllers/exynos5422-dmc.txt
deleted file mode 100644
index 02e4a1f862..0000000000
--- a/dts/Bindings/memory-controllers/exynos5422-dmc.txt
+++ /dev/null
@@ -1,84 +0,0 @@
-* Exynos5422 frequency and voltage scaling for Dynamic Memory Controller device
-
-The Samsung Exynos5422 SoC has DMC (Dynamic Memory Controller) to which the DRAM
-memory chips are connected. The driver is to monitor the controller in runtime
-and switch frequency and voltage. To monitor the usage of the controller in
-runtime, the driver uses the PPMU (Platform Performance Monitoring Unit), which
-is able to measure the current load of the memory.
-When 'userspace' governor is used for the driver, an application is able to
-switch the DMC and memory frequency.
-
-Required properties for DMC device for Exynos5422:
-- compatible: Should be "samsung,exynos5422-dmc".
-- clocks : list of clock specifiers, must contain an entry for each
- required entry in clock-names for CLK_FOUT_SPLL, CLK_MOUT_SCLK_SPLL,
- CLK_FF_DOUT_SPLL2, CLK_FOUT_BPLL, CLK_MOUT_BPLL, CLK_SCLK_BPLL,
- CLK_MOUT_MX_MSPLL_CCORE, CLK_MOUT_MX_MSPLL_CCORE_PHY, CLK_MOUT_MCLK_CDREX,
-- clock-names : should include "fout_spll", "mout_sclk_spll", "ff_dout_spll2",
- "fout_bpll", "mout_bpll", "sclk_bpll", "mout_mx_mspll_ccore",
- "mout_mclk_cdrex" entries
-- devfreq-events : phandles for PPMU devices connected to this DMC.
-- vdd-supply : phandle for voltage regulator which is connected.
-- reg : registers of two CDREX controllers.
-- operating-points-v2 : phandle for OPPs described in v2 definition.
-- device-handle : phandle of the connected DRAM memory device. For more
- information please refer to documentation file:
- Documentation/devicetree/bindings/ddr/lpddr3.txt
-- devfreq-events : phandles of the PPMU events used by the controller.
-- samsung,syscon-clk : phandle of the clock register set used by the controller,
- these registers are used for enabling a 'pause' feature and are not
- exposed by clock framework but they must be used in a safe way.
- The register offsets are in the driver code and specyfic for this SoC
- type.
-
-Optional properties for DMC device for Exynos5422:
-- interrupt-parent : The parent interrupt controller.
-- interrupts : Contains the IRQ line numbers for the DMC internal performance
- event counters in DREX0 and DREX1 channels. Align with specification of the
- interrupt line(s) in the interrupt-parent controller.
-- interrupt-names : IRQ names "drex_0" and "drex_1", the order should be the
- same as in the 'interrupts' list above.
-
-Example:
-
- ppmu_dmc0_0: ppmu@10d00000 {
- compatible = "samsung,exynos-ppmu";
- reg = <0x10d00000 0x2000>;
- clocks = <&clock CLK_PCLK_PPMU_DREX0_0>;
- clock-names = "ppmu";
- events {
- ppmu_event_dmc0_0: ppmu-event3-dmc0_0 {
- event-name = "ppmu-event3-dmc0_0";
- };
- };
- };
-
- dmc: memory-controller@10c20000 {
- compatible = "samsung,exynos5422-dmc";
- reg = <0x10c20000 0x10000>, <0x10c30000 0x10000>;
- clocks = <&clock CLK_FOUT_SPLL>,
- <&clock CLK_MOUT_SCLK_SPLL>,
- <&clock CLK_FF_DOUT_SPLL2>,
- <&clock CLK_FOUT_BPLL>,
- <&clock CLK_MOUT_BPLL>,
- <&clock CLK_SCLK_BPLL>,
- <&clock CLK_MOUT_MX_MSPLL_CCORE>,
- <&clock CLK_MOUT_MCLK_CDREX>;
- clock-names = "fout_spll",
- "mout_sclk_spll",
- "ff_dout_spll2",
- "fout_bpll",
- "mout_bpll",
- "sclk_bpll",
- "mout_mx_mspll_ccore",
- "mout_mclk_cdrex";
- operating-points-v2 = <&dmc_opp_table>;
- devfreq-events = <&ppmu_event3_dmc0_0>, <&ppmu_event3_dmc0_1>,
- <&ppmu_event3_dmc1_0>, <&ppmu_event3_dmc1_1>;
- device-handle = <&samsung_K3QF2F20DB>;
- vdd-supply = <&buck1_reg>;
- samsung,syscon-clk = <&clock>;
- interrupt-parent = <&combiner>;
- interrupts = <16 0>, <16 1>;
- interrupt-names = "drex_0", "drex_1";
- };