[PATCH v2 3/4] arm: dts: EMIF and LPDDR2 device tree data for OMAP4 boards

Aneesh V
2012-03-15T18:35:40Z

Device tree data for the EMIF sdram controllers in OMAP4
and LPDDR2 memory devices attached to OMAP4 boards.

Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Aneesh V <aneesh@ti.com>
---
v1:
- Removed DDR3 only parameters from
elpida_ecb240abacn.dtsi
---
arch/arm/boot/dts/elpida_ecb240abacn.dtsi | 67 +++++++++++++++++++++++++++++
arch/arm/boot/dts/omap4-panda.dts | 13 ++++++
arch/arm/boot/dts/omap4-sdp.dts | 13 ++++++
arch/arm/boot/dts/omap4.dtsi | 18 ++++++++
4 files changed, 111 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/boot/dts/elpida_ecb240abacn.dtsi

diff --git a/arch/arm/boot/dts/elpida_ecb240abacn.dtsi b/arch/arm/boot/dts/elpida_ecb240abacn.dtsi
new file mode 100644
index 0000000..34b9f72
--- /dev/null
+++ b/arch/arm/boot/dts/elpida_ecb240abacn.dtsi
@@ -0,0 +1,67 @@
+/*
+ * Common devices used in different OMAP boards
+ */
+
+/ {
+ elpida_ECB240ABACN: lpddr2 {
+ compatible = "Elpida,ECB240ABACN","jedec,lpddr2-s4";
+ density = <2048>;
+ 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_elpida_ECB240ABACN_400mhz: lpddr2-timings@0 {
+ compatible = "jedec,lpddr2-timings";
+ min-freq = <10000000>;
+ max-freq = <400000000>;
+ 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_elpida_ECB240ABACN_200mhz: lpddr2-timings@1 {
+ compatible = "jedec,lpddr2-timings";
+ min-freq = <10000000>;
+ max-freq = <200000000>;
+ tRPab = <21000>;
+ tRCD = <18000>;
+ tWR = <15000>;
+ tRAS-min = <42000>;
+ tRRD = <10000>;
+ tWTR = <10000>;
+ 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>;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/omap4-panda.dts b/arch/arm/boot/dts/omap4-panda.dts
index 9755ad5..f548523 100644
--- a/arch/arm/boot/dts/omap4-panda.dts
+++ b/arch/arm/boot/dts/omap4-panda.dts
@@ -8,6 +8,7 @@
/dts-v1/;

/include/ "omap4.dtsi"
+/include/ "elpida_ecb240abacn.dtsi"

/ {
model = "TI OMAP4 PandaBoard";
@@ -17,4 +18,16 @@
device_type = "memory";
reg = <0x80000000 0x40000000>; /* 1 GB */
};
+
+ ocp {
+ emif1: emif@0x4c000000 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ };
+
+ emif2: emif@0x4d000000 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ };
+ };
};
diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
index 63c6b2b..6dc08bc 100644
--- a/arch/arm/boot/dts/omap4-sdp.dts
+++ b/arch/arm/boot/dts/omap4-sdp.dts
@@ -8,6 +8,7 @@
/dts-v1/;

/include/ "omap4.dtsi"
+/include/ "elpida_ecb240abacn.dtsi"

/ {
model = "TI OMAP4 SDP board";
@@ -17,4 +18,16 @@
device_type = "memory";
reg = <0x80000000 0x40000000>; /* 1 GB */
};
+
+ ocp {
+ emif1: emif@0x4c000000 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ };
+
+ emif2: emif@0x4d000000 {
+ cs1-used;
+ device-handle = <&elpida_ECB240ABACN>;
+ };
+ };
};
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 70a44f6..fe3664a 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -127,5 +127,23 @@
ti,hwmods = "uart4";
clock-frequency = <48000000>;
};
+
+ emif1: emif@0x4c000000 {
+ compatible = "ti,emif-4d";
+ ti,hwmods = "emif1";
+ phy-type = <1>;
+ hw-caps-read-idle-ctrl;
+ hw-caps-ll-interface;
+ hw-caps-temp-alert;
+ };
+
+ emif2: emif@0x4d000000 {
+ compatible = "ti,emif-4d";
+ ti,hwmods = "emif2";
+ phy-type = <1>;
+ hw-caps-read-idle-ctrl;
+ hw-caps-ll-interface;
+ hw-caps-temp-alert;
+ };
};
};
--
1.7.1