Device tree data for the EMIF sdram controllers in OMAP4 and LPDDR memory devices attached to OMAP4 boards.
Cc: Rajendra Nayak <[email protected]> Cc: Benoit Cousson <[email protected]> Cc: Olof Johansson <[email protected]> Signed-off-by: Aneesh V <[email protected]> --- Changes in RFC v3: * Fixed review comments from RFC v2 --- arch/arm/boot/dts/elpida_ecb240abacn.dtsi | 65 +++++++++++++++++++++++++++++ arch/arm/boot/dts/omap4-panda.dts | 13 ++++++ arch/arm/boot/dts/omap4-sdp.dts | 13 ++++++ arch/arm/boot/dts/omap4.dtsi | 19 ++++++++ 4 files changed, 110 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..2384233 --- /dev/null +++ b/arch/arm/boot/dts/elpida_ecb240abacn.dtsi @@ -0,0 +1,65 @@ +/* + * 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>; + }; + + 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>; + }; + }; +}; diff --git a/arch/arm/boot/dts/omap4-panda.dts b/arch/arm/boot/dts/omap4-panda.dts index c702657..9b46802 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"; @@ -26,4 +27,16 @@ 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 066e28c..896d682 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"; @@ -26,4 +27,16 @@ 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 e8fe75f..bd57229 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -127,5 +127,24 @@ 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 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
