Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/Documentation/devicetree/bindings/ddr/lpddr3.txt b/Documentation/devicetree/bindings/ddr/lpddr3.txt
new file mode 100644
index 0000000..a0eda35
--- /dev/null
+++ b/Documentation/devicetree/bindings/ddr/lpddr3.txt
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+* LPDDR3 SDRAM memories compliant to JEDEC JESD209-3C
+
+Required properties:
+- compatible : Should be "<vendor>,<type>", and generic value "jedec,lpddr3".
+ Example "<vendor>,<type>" values:
+ "samsung,K3QF2F20DB"
+
+- density : <u32> representing density in Mb (Mega bits)
+- io-width : <u32> representing bus width. Possible values are 8, 16, 32, 64
+- #address-cells: Must be set to 1
+- #size-cells: Must be set to 0
+
+Optional properties:
+
+The following optional properties represent the minimum value of some AC
+timing parameters of the DDR device in terms of number of clock cycles.
+These values shall be obtained from the device data-sheet.
+- tRFC-min-tck
+- tRRD-min-tck
+- tRPab-min-tck
+- tRPpb-min-tck
+- tRCD-min-tck
+- tRC-min-tck
+- tRAS-min-tck
+- tWTR-min-tck
+- tWR-min-tck
+- tRTP-min-tck
+- tW2W-C2C-min-tck
+- tR2R-C2C-min-tck
+- tWL-min-tck
+- tDQSCK-min-tck
+- tRL-min-tck
+- tFAW-min-tck
+- tXSR-min-tck
+- tXP-min-tck
+- tCKE-min-tck
+- tCKESR-min-tck
+- tMRD-min-tck
+
+Child nodes:
+- The lpddr3 node may have one or more child nodes of type "lpddr3-timings".
+ "lpddr3-timings" provides AC timing parameters of the device for
+ a given speed-bin. Please see Documentation/devicetree/
+ bindings/ddr/lpddr3-timings.txt for more information on "lpddr3-timings"
+
+Example:
+
+samsung_K3QF2F20DB: lpddr3 {
+ compatible = "samsung,K3QF2F20DB", "jedec,lpddr3";
+ density = <16384>;
+ io-width = <32>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tRFC-min-tck = <17>;
+ tRRD-min-tck = <2>;
+ tRPab-min-tck = <2>;
+ tRPpb-min-tck = <2>;
+ tRCD-min-tck = <3>;
+ tRC-min-tck = <6>;
+ tRAS-min-tck = <5>;
+ tWTR-min-tck = <2>;
+ tWR-min-tck = <7>;
+ tRTP-min-tck = <2>;
+ tW2W-C2C-min-tck = <0>;
+ tR2R-C2C-min-tck = <0>;
+ tWL-min-tck = <8>;
+ tDQSCK-min-tck = <5>;
+ tRL-min-tck = <14>;
+ tFAW-min-tck = <5>;
+ tXSR-min-tck = <12>;
+ tXP-min-tck = <2>;
+ tCKE-min-tck = <2>;
+ tCKESR-min-tck = <2>;
+ tMRD-min-tck = <5>;
+
+ timings_samsung_K3QF2F20DB_800mhz: lpddr3-timings@800000000 {
+ compatible = "jedec,lpddr3-timings";
+ /* workaround: 'reg' shows max-freq */
+ reg = <800000000>;
+ min-freq = <100000000>;
+ tRFC = <65000>;
+ tRRD = <6000>;
+ tRPab = <12000>;
+ tRPpb = <12000>;
+ tRCD = <10000>;
+ tRC = <33750>;
+ tRAS = <23000>;
+ tWTR = <3750>;
+ tWR = <7500>;
+ tRTP = <3750>;
+ tW2W-C2C = <0>;
+ tR2R-C2C = <0>;
+ tFAW = <25000>;
+ tXSR = <70000>;
+ tXP = <3750>;
+ tCKE = <3750>;
+ tCKESR = <3750>;
+ tMRD = <7000>;
+ };
+}