[PATCH V3 3/3] ARM: dts: omap5-evm: LPDDR2 memory device details for EVM
From: Lokesh Vutla <hidden>
Date: 2012-11-05 12:52:52
Also in:
linux-devicetree, linux-omap
Subsystem:
the rest · Maintainer:
Linus Torvalds
Samsung's K3PE0E000B memory part is used in OMAP5-evm board. Adding timings and geometry details for Samsung's memory part and attaching the same to device-handle of EMIF1/2. Signed-off-by: Lokesh Vutla <redacted> --- arch/arm/boot/dts/omap5-evm.dts | 11 +++++ arch/arm/boot/dts/samsung_k3pe0e000b.dtsi | 67 +++++++++++++++++++++++++++++ 2 files changed, 78 insertions(+) create mode 100644 arch/arm/boot/dts/samsung_k3pe0e000b.dtsi
diff --git a/arch/arm/boot/dts/omap5-evm.dts b/arch/arm/boot/dts/omap5-evm.dts
index 88d3d9b8..8722c15 100644
--- a/arch/arm/boot/dts/omap5-evm.dts
+++ b/arch/arm/boot/dts/omap5-evm.dts@@ -8,6 +8,7 @@ /dts-v1/; /include/ "omap5.dtsi" +/include/ "samsung_k3pe0e000b.dtsi" / { model = "TI OMAP5 EVM board";
@@ -140,3 +141,13 @@ &mcbsp3 { status = "disabled"; }; + +&emif1 { + cs1-used; + device-handle = <&samsung_K3PE0E000B>; +}; + +&emif2 { + cs1-used; + device-handle = <&samsung_K3PE0E000B>; +};
diff --git a/arch/arm/boot/dts/samsung_k3pe0e000b.dtsi b/arch/arm/boot/dts/samsung_k3pe0e000b.dtsi
new file mode 100644
index 0000000..9657a5c
--- /dev/null
+++ b/arch/arm/boot/dts/samsung_k3pe0e000b.dtsi@@ -0,0 +1,67 @@ +/* + * Timings and Geometry for Samsung K3PE0E000B memory part + */ + +/ { + samsung_K3PE0E000B: lpddr2 { + compatible = "Samsung,K3PE0E000B","jedec,lpddr2-s4"; + density = <4096>; + io-width = <32>; + + tRPab-min-tck = <3>; + tRCD-min-tck = <3>; + tWR-min-tck = <3>; + tRASmin-min-tck = <3>; + tRRD-min-tck = <2>; + tWTR-min-tck = <2>; + tXP-min-tck = <2>; + tRTP-min-tck = <2>; + tCKE-min-tck = <3>; + tCKESR-min-tck = <3>; + tFAW-min-tck = <8>; + + timings_samsung_K3PE0E000B_533MHz: lpddr2-timings at 0 { + compatible = "jedec,lpddr2-timings"; + min-freq = <10000000>; + max-freq = <533333333>; + tRPab = <21000>; + tRCD = <18000>; + tWR = <15000>; + tRAS-min = <42000>; + tRRD = <10000>; + tWTR = <7500>; + tXP = <7500>; + tRTP = <7500>; + tCKESR = <15000>; + tDQSCK-max = <5500>; + tFAW = <50000>; + tZQCS = <90000>; + tZQCL = <360000>; + tZQinit = <1000000>; + tRAS-max-ns = <70000>; + tDQSCK-max-derated = <6000>; + }; + + timings_samsung_K3PE0E000B_266MHz: lpddr2-timings at 1 { + compatible = "jedec,lpddr2-timings"; + min-freq = <10000000>; + max-freq = <266666666>; + tRPab = <21000>; + tRCD = <18000>; + tWR = <15000>; + tRAS-min = <42000>; + tRRD = <10000>; + tWTR = <7500>; + tXP = <7500>; + tRTP = <7500>; + tCKESR = <15000>; + tDQSCK-max = <5500>; + tFAW = <50000>; + tZQCS = <90000>; + tZQCL = <360000>; + tZQinit = <1000000>; + tRAS-max-ns = <70000>; + tDQSCK-max-derated = <6000>; + }; + }; +};
--
1.7.9.5