diff mbox

[V2,3/3] ARM: dts: omap5-evm: LPDDR2 memory device details for EVM

Message ID 1349959669-16366-4-git-send-email-lokeshvutla@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lokesh Vutla Oct. 11, 2012, 12:47 p.m. UTC 
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@ti.com>
---
 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

Comments

Benoit Cousson Nov. 5, 2012, 11:02 a.m. UTC | #1 
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@ti.com>
> ---
>  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
diff mbox

Patch

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 {
+			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@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>;
+		};
+	};
+};