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>

diff --git a/arch/arm/boot/dts/lpc4350-hitex-eval.dts b/arch/arm/boot/dts/lpc4350-hitex-eval.dts
index 1150052..32bc7ff 100644 (file)
--- 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>;
 };