ARM: dts: EMIF and LPDDR2 device tree data for OMAP4 boards

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

Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Aneesh V <aneesh@ti.com>
[santosh.shilimkar@ti.com: Rebased against 3.6-rc]
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[b-cousson@ti.com: Use label in board to access EMIF nodes]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>

4 files changed, 107 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/elpida_ecb240abacn.dtsi b/arch/arm/boot/dts/elpida_ecb240abacn.dtsi
new file mode 100644
index 000000000000..f97f70f83374
--- /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 9880c12877b3..20b966ee1bb3 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";
@@ -126,3 +127,13 @@
         ti,non-removable;
         bus-width = <4>;
 };
+
+&emif1 {
+        cs1-used;
+        device-handle = <&elpida_ECB240ABACN>;
+};
+
+&emif2 {
+        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 8869c1e209fe..7e83a61de0b2 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";
@@ -227,6 +228,16 @@
         ti,non-removable;
 };
 
+&emif1 {
+        cs1-used;
+        device-handle = <&elpida_ECB240ABACN>;
+};
+
+&emif2 {
+        cs1-used;
+        device-handle = <&elpida_ECB240ABACN>;
+};
+
 &keypad {
         keypad,num-rows = <8>;
         keypad,num-columns = <8>;
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 7fc45bb8a951..c7dc11feb9da 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -300,5 +300,23 @@
                         compatible = "ti,omap4-keypad";
                         ti,hwmods = "kbd";
                 };
+
+                emif1: emif@4c000000 {
+                        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@4d000000 {
+                        compatible = "ti,emif-4d";
+                        ti,hwmods = "emif2";
+                        phy-type = <1>;
+                        hw-caps-read-idle-ctrl;
+                        hw-caps-ll-interface;
+                        hw-caps-temp-alert;
+                };
         };
 };