ARM: dts: lpc4350-hitex-eval: 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 Hitex eval board.

The Hitex eval board has a NOR Flash attached to chip select 0
and 512 kB of SRAM on chip select 2.

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

1 files changed, 164 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/lpc4350-hitex-eval.dts b/arch/arm/boot/dts/lpc4350-hitex-eval.dts
index 1150052731af..32bc7ff4eb2a 100644
--- a/arch/arm/boot/dts/lpc4350-hitex-eval.dts
+++ b/arch/arm/boot/dts/lpc4350-hitex-eval.dts
@@ -37,6 +37,106 @@
 };
 
 &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_15_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";
+			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_cs2_cfg {
+			pins = "p1_5", "pd_12";
+			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_mii_pins: enet-mii-pins {
 		enet_mii_rxd0_3_cfg {
 			pins = "p1_15", "p0_0", "p9_3", "p9_2";
@@ -103,6 +203,70 @@
 	};
 };
 
+&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>;
+		mpmc,byte-lane-low;
+		mpmc,write-enable-delay = <0>;
+		mpmc,output-enable-delay = <30>;
+		mpmc,read-access-delay = <90>;
+		mpmc,page-mode-read-delay = <55>;
+		mpmc,write-access-delay = <55>;
+		mpmc,turn-round-delay = <55>;
+
+		ext_sram: sram@2,0 {
+			compatible = "mmio-sram";
+			reg = <2 0 0x80000>; /* 512 KiB SRAM on IS62WV25616 */
+		};
+	};
+};
+
 &enet_tx_clk {
 	clock-frequency = <25000000>;
 };