From: Joachim Eastwood <manabian@gmail.com>
Date: Thu, 30 Jul 2015 22:24:23 +0000 (+0200)
Subject: ARM: dts: lpc4357-ea4357: add emc pins and static memory devices
X-Git-Tag: v4.3-rc1~120^2~29
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=3c6abb97f343aec1df1f1cc213886ccfd2f38c6b;p=linux.git

ARM: dts: lpc4357-ea4357: add emc pins and static memory devices

Setup the emc pins used by external memory devices and add
configuration for the devices found on the EA4357 devkit.

The EA4357 devkit has a NOR Flash attached to chip select 0
and a D-type flip-flop used for LEDs on chip select 2.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
---

diff --git a/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts b/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
index 9ac096746360..7768d724c379 100644
--- a/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
+++ b/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
@@ -88,6 +88,110 @@ button@4 {
 };
 
 &pinctrl {
+	emc_pins: emc-pins {
+		emc_addr0_23_cfg {
+			pins =	"p2_9",  "p2_10", "p2_11", "p2_12",
+				"p2_13", "p1_0",  "p1_1",  "p1_2",
+				"p2_8",  "p2_7",  "p2_6",  "p2_2",
+				"p2_1",  "p2_0",  "p6_8",  "p6_7",
+				"pd_16", "pd_15", "pe_0",  "pe_1",
+				"pe_2",  "pe_3",  "pe_4",  "pa_4";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_data0_31_cfg {
+			pins =	"p1_7",  "p1_8",  "p1_9",  "p1_10",
+				"p1_11", "p1_12", "p1_13", "p1_14",
+				"p5_4",  "p5_5",  "p5_6",  "p5_7",
+				"p5_0",  "p5_1",  "p5_2",  "p5_3",
+				"pd_2",  "pd_3",  "pd_4",  "pd_5",
+				"pd_6",  "pd_7",  "pd_8",  "pd_9",
+				"pe_5",  "pe_6",  "pe_7",  "pe_8",
+				"pe_9",  "pe_10", "pe_11", "pe_12";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_we_oe_cfg {
+			pins = "p1_6", "p1_3";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_bls0_3_cfg {
+			pins = "p1_4", "p6_6", "pd_13", "pd_10";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_cs0_3_cfg {
+			pins = "p1_5", "p6_3", "pd_12", "pd_11";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_sdram_dqm0_3_cfg {
+			pins = "p6_12", "p6_10", "pd_0", "pe_13";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_sdram_ras_cas_cfg {
+			pins = "p6_5", "p6_4";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_sdram_dycs0_cfg {
+			pins = "p6_9";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_sdram_cke_cfg {
+			pins = "p6_11";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		emc_sdram_clock_cfg {
+			pins = "clk0", "clk1", "clk2", "clk3";
+			function = "emc";
+			slew-rate = <1>;
+			bias-disable;
+			input-enable;
+			input-schmitt-disable;
+		};
+	};
+
 	enet_rmii_pins: enet-rmii-pins {
 		enet_rmii_rxd_cfg {
 			pins = "p1_15", "p0_0";
@@ -237,6 +341,66 @@ usb0_pwr_fault {
 	};
 };
 
+&emc {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&emc_pins>;
+
+	cs0 {
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+
+		mpmc,cs = <0>;
+		mpmc,memory-width = <16>;
+		mpmc,byte-lane-low;
+		mpmc,write-enable-delay = <0>;
+		mpmc,output-enable-delay = <0>;
+		mpmc,read-access-delay = <70>;
+		mpmc,page-mode-read-delay = <70>;
+
+		flash@0,0 {
+			compatible = "sst,sst39vf320", "cfi-flash";
+			reg = <0 0 0x400000>;
+			bank-width = <2>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "bootloader";
+				reg = <0x000000 0x040000>; /* 256 KiB */
+			};
+
+			partition@1 {
+				label = "kernel";
+				reg = <0x040000 0x2c0000>; /* 2.75 MiB */
+			};
+
+			partition@2 {
+				label = "rootfs";
+				reg = <0x300000 0x100000>; /* 1 MiB */
+			};
+		};
+	};
+
+	cs2 {
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+
+		mpmc,cs = <2>;
+		mpmc,memory-width = <16>;
+
+		mmio_leds: gpio@2,0 {
+			compatible = "ti,7416374";
+			reg = <2 0 0x2>;
+			gpio-controller;
+			#gpio-cells = <2>;
+		};
+
+	};
+};
+
 &enet_tx_clk {
 	clock-frequency = <50000000>;
 };