On 10/11/2012 02:47 PM, Lokesh Vutla wrote:
> 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 <lokeshvutla@xxxxxx>
> ---
> 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 6f87e1a..ed1d1b5 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";
> @@ -82,3 +83,13 @@
> 0x020700d9>; /* SEARCH */
> linux,input-no-autorepeat;
> };
> +
> +&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..b352d69
> --- /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@0 {
Nit, but the official unit is: MHz [1].
Regards,
Benoit
[1] http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf
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