summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/memory-controllers
diff options
context:
space:
mode:
authorSascha Hauer <s.hauer@pengutronix.de>2019-01-14 09:09:57 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2019-01-14 09:09:57 +0100
commit33fdc89d4cbd74aa54c28dc61d62972ab164e64d (patch)
treeda5ceff551dc1fdf2f2cc40e97a08035f9ef84fb /dts/Bindings/memory-controllers
parent13a52906ce67ed2ce67bfc10714934ffa6c5d646 (diff)
downloadbarebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.gz
barebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.xz
dts: update to v5.0-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/memory-controllers')
-rw-r--r--dts/Bindings/memory-controllers/nvidia,tegra20-emc.txt104
-rw-r--r--dts/Bindings/memory-controllers/pl353-smc.txt47
-rw-r--r--dts/Bindings/memory-controllers/synopsys.txt27
3 files changed, 173 insertions, 5 deletions
diff --git a/dts/Bindings/memory-controllers/nvidia,tegra20-emc.txt b/dts/Bindings/memory-controllers/nvidia,tegra20-emc.txt
new file mode 100644
index 0000000000..add9536764
--- /dev/null
+++ b/dts/Bindings/memory-controllers/nvidia,tegra20-emc.txt
@@ -0,0 +1,104 @@
+Embedded Memory Controller
+
+Properties:
+- name : Should be emc
+- #address-cells : Should be 1
+- #size-cells : Should be 0
+- compatible : Should contain "nvidia,tegra20-emc".
+- reg : Offset and length of the register set for the device
+- nvidia,use-ram-code : If present, the sub-nodes will be addressed
+ and chosen using the ramcode board selector. If omitted, only one
+ set of tables can be present and said tables will be used
+ irrespective of ram-code configuration.
+- interrupts : Should contain EMC General interrupt.
+- clocks : Should contain EMC clock.
+
+Child device nodes describe the memory settings for different configurations and clock rates.
+
+Example:
+
+ memory-controller@7000f400 {
+ #address-cells = < 1 >;
+ #size-cells = < 0 >;
+ compatible = "nvidia,tegra20-emc";
+ reg = <0x7000f4000 0x200>;
+ interrupts = <0 78 0x04>;
+ clocks = <&tegra_car TEGRA20_CLK_EMC>;
+ }
+
+
+Embedded Memory Controller ram-code table
+
+If the emc node has the nvidia,use-ram-code property present, then the
+next level of nodes below the emc table are used to specify which settings
+apply for which ram-code settings.
+
+If the emc node lacks the nvidia,use-ram-code property, this level is omitted
+and the tables are stored directly under the emc node (see below).
+
+Properties:
+
+- name : Should be emc-tables
+- nvidia,ram-code : the binary representation of the ram-code board strappings
+ for which this node (and children) are valid.
+
+
+
+Embedded Memory Controller configuration table
+
+This is a table containing the EMC register settings for the various
+operating speeds of the memory controller. They are always located as
+subnodes of the emc controller node.
+
+There are two ways of specifying which tables to use:
+
+* The simplest is if there is just one set of tables in the device tree,
+ and they will always be used (based on which frequency is used).
+ This is the preferred method, especially when firmware can fill in
+ this information based on the specific system information and just
+ pass it on to the kernel.
+
+* The slightly more complex one is when more than one memory configuration
+ might exist on the system. The Tegra20 platform handles this during
+ early boot by selecting one out of possible 4 memory settings based
+ on a 2-pin "ram code" bootstrap setting on the board. The values of
+ these strappings can be read through a register in the SoC, and thus
+ used to select which tables to use.
+
+Properties:
+- name : Should be emc-table
+- compatible : Should contain "nvidia,tegra20-emc-table".
+- reg : either an opaque enumerator to tell different tables apart, or
+ the valid frequency for which the table should be used (in kHz).
+- clock-frequency : the clock frequency for the EMC at which this
+ table should be used (in kHz).
+- nvidia,emc-registers : a 46 word array of EMC registers to be programmed
+ for operation at the 'clock-frequency' setting.
+ The order and contents of the registers are:
+ RC, RFC, RAS, RP, R2W, W2R, R2P, W2P, RD_RCD, WR_RCD, RRD, REXT,
+ WDV, QUSE, QRST, QSAFE, RDV, REFRESH, BURST_REFRESH_NUM, PDEX2WR,
+ PDEX2RD, PCHG2PDEN, ACT2PDEN, AR2PDEN, RW2PDEN, TXSR, TCKE, TFAW,
+ TRPAB, TCLKSTABLE, TCLKSTOP, TREFBW, QUSE_EXTRA, FBIO_CFG6, ODT_WRITE,
+ ODT_READ, FBIO_CFG5, CFG_DIG_DLL, DLL_XFORM_DQS, DLL_XFORM_QUSE,
+ ZCAL_REF_CNT, ZCAL_WAIT_CNT, AUTO_CAL_INTERVAL, CFG_CLKTRIM_0,
+ CFG_CLKTRIM_1, CFG_CLKTRIM_2
+
+ emc-table@166000 {
+ reg = <166000>;
+ compatible = "nvidia,tegra20-emc-table";
+ clock-frequency = < 166000 >;
+ nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 >;
+ };
+
+ emc-table@333000 {
+ reg = <333000>;
+ compatible = "nvidia,tegra20-emc-table";
+ clock-frequency = < 333000 >;
+ nvidia,emc-registers = < 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ 0 0 0 0 >;
+ };
diff --git a/dts/Bindings/memory-controllers/pl353-smc.txt b/dts/Bindings/memory-controllers/pl353-smc.txt
new file mode 100644
index 0000000000..d56615fd34
--- /dev/null
+++ b/dts/Bindings/memory-controllers/pl353-smc.txt
@@ -0,0 +1,47 @@
+Device tree bindings for ARM PL353 static memory controller
+
+PL353 static memory controller supports two kinds of memory
+interfaces.i.e NAND and SRAM/NOR interfaces.
+The actual devices are instantiated from the child nodes of pl353 smc node.
+
+Required properties:
+- compatible : Should be "arm,pl353-smc-r2p1", "arm,primecell".
+- reg : Controller registers map and length.
+- clock-names : List of input clock names - "memclk", "apb_pclk"
+ (See clock bindings for details).
+- clocks : Clock phandles (see clock bindings for details).
+- address-cells : Must be 2.
+- size-cells : Must be 1.
+
+Child nodes:
+ For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are
+supported as child nodes.
+
+for NAND partition information please refer the below file
+Documentation/devicetree/bindings/mtd/partition.txt
+
+Example:
+ smcc: memory-controller@e000e000
+ compatible = "arm,pl353-smc-r2p1", "arm,primecell";
+ clock-names = "memclk", "apb_pclk";
+ clocks = <&clkc 11>, <&clkc 44>;
+ reg = <0xe000e000 0x1000>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0xe1000000 0x1000000 //Nand CS Region
+ 0x1 0x0 0xe2000000 0x2000000 //SRAM/NOR CS Region
+ 0x2 0x0 0xe4000000 0x2000000>; //SRAM/NOR CS Region
+ nand_0: flash@e1000000 {
+ compatible = "arm,pl353-nand-r2p1"
+ reg = <0 0 0x1000000>;
+ (...)
+ };
+ nor0: flash@e2000000 {
+ compatible = "cfi-flash";
+ reg = <1 0 0x2000000>;
+ };
+ nor1: flash@e4000000 {
+ compatible = "cfi-flash";
+ reg = <2 0 0x2000000>;
+ };
+ };
diff --git a/dts/Bindings/memory-controllers/synopsys.txt b/dts/Bindings/memory-controllers/synopsys.txt
index a43d26d41e..9d32762c47 100644
--- a/dts/Bindings/memory-controllers/synopsys.txt
+++ b/dts/Bindings/memory-controllers/synopsys.txt
@@ -1,15 +1,32 @@
Binding for Synopsys IntelliDDR Multi Protocol Memory Controller
-This controller has an optional ECC support in half-bus width (16-bit)
-configuration. The ECC controller corrects one bit error and detects
-two bit errors.
+The ZynqMP DDR ECC controller has an optional ECC support in 64-bit and 32-bit
+bus width configurations.
+
+The Zynq DDR ECC controller has an optional ECC support in half-bus width
+(16-bit) configuration.
+
+These both ECC controllers correct single bit ECC errors and detect double bit
+ECC errors.
Required properties:
- - compatible: Should be 'xlnx,zynq-ddrc-a05'
- - reg: Base address and size of the controllers memory area
+ - compatible: One of:
+ - 'xlnx,zynq-ddrc-a05' : Zynq DDR ECC controller
+ - 'xlnx,zynqmp-ddrc-2.40a' : ZynqMP DDR ECC controller
+ - reg: Should contain DDR controller registers location and length.
+
+Required properties for "xlnx,zynqmp-ddrc-2.40a":
+ - interrupts: Property with a value describing the interrupt number.
Example:
memory-controller@f8006000 {
compatible = "xlnx,zynq-ddrc-a05";
reg = <0xf8006000 0x1000>;
};
+
+ mc: memory-controller@fd070000 {
+ compatible = "xlnx,zynqmp-ddrc-2.40a";
+ reg = <0x0 0xfd070000 0x0 0x30000>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 112 4>;
+ };