GTA04A5 has been produced with MCP chips either with
512MB RAM + 512MB NAND
512MB RAM + 1024MB NAND
1024MB RAM + 512MB OneNAND
RAM setup is done by U-Boot (MLO/SPL) but OneNAND needs
a different setup of the GPMC. So we need to derive a
DTB variant that modifies the gpmc and nand setup.
Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/omap3-gta04a5one.dts | 114 +++++++++++++++++++++++++++++++++
1 file changed, 114 insertions(+)
create mode 100644 arch/arm/boot/dts/omap3-gta04a5one.dts
diff --git a/arch/arm/boot/dts/omap3-gta04a5one.dts b/arch/arm/boot/dts/omap3-gta04a5one.dts
new file mode 100644
index 000000000000..9b7bbdc344b3
--- /dev/null
+++ b/arch/arm/boot/dts/omap3-gta04a5one.dts
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2014-18 H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "omap3-gta04a5.dts"
+
+&omap3_pmx_core {
+ model = "Goldelico GTA04A5/Letux 2804 with OneNAND";
+
+ gpmc_pins: pinmux_gpmc_pins {
+ pinctrl-single,pins = <
+
+ /* address lines */
+ OMAP3_CORE1_IOPAD(0x207a, PIN_OUTPUT | MUX_MODE0) /* gpmc_a1.gpmc_a1 */
+ OMAP3_CORE1_IOPAD(0x207c, PIN_OUTPUT | MUX_MODE0) /* gpmc_a2.gpmc_a2 */
+ OMAP3_CORE1_IOPAD(0x207e, PIN_OUTPUT | MUX_MODE0) /* gpmc_a3.gpmc_a3 */
+
+ /* data lines, gpmc_d0..d7 not muxable according to TRM */
+ OMAP3_CORE1_IOPAD(0x209e, PIN_INPUT | MUX_MODE0) /* gpmc_d8.gpmc_d8 */
+ OMAP3_CORE1_IOPAD(0x20a0, PIN_INPUT | MUX_MODE0) /* gpmc_d9.gpmc_d9 */
+ OMAP3_CORE1_IOPAD(0x20a2, PIN_INPUT | MUX_MODE0) /* gpmc_d10.gpmc_d10 */
+ OMAP3_CORE1_IOPAD(0x20a4, PIN_INPUT | MUX_MODE0) /* gpmc_d11.gpmc_d11 */
+ OMAP3_CORE1_IOPAD(0x20a6, PIN_INPUT | MUX_MODE0) /* gpmc_d12.gpmc_d12 */
+ OMAP3_CORE1_IOPAD(0x20a8, PIN_INPUT | MUX_MODE0) /* gpmc_d13.gpmc_d13 */
+ OMAP3_CORE1_IOPAD(0x20aa, PIN_INPUT | MUX_MODE0) /* gpmc_d14.gpmc_d14 */
+ OMAP3_CORE1_IOPAD(0x20ac, PIN_INPUT | MUX_MODE0) /* gpmc_d15.gpmc_d15 */
+
+ /*
+ * gpmc_ncs0, gpmc_nadv_ale, gpmc_noe, gpmc_nwe, gpmc_wait0 not muxable
+ * according to TRM. OneNAND seems to require PIN_INPUT on clock.
+ */
+ OMAP3_CORE1_IOPAD(0x20b0, PIN_OUTPUT | MUX_MODE0) /* gpmc_ncs1.gpmc_ncs1 */
+ OMAP3_CORE1_IOPAD(0x20be, PIN_INPUT | MUX_MODE0) /* gpmc_clk.gpmc_clk */
+ >;
+ };
+};
+
+&gpmc {
+ /* switch inherited setup to OneNAND */
+
+ ranges = <0 0 0x04000000 0x1000000>; /* CS0: 16MB for OneNAND */
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpmc_pins>;
+
+ /delete-node/ nand@0,0;
+
+ onenand@0,0 {
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "ti,omap2-onenand";
+ reg = <0 0 0x20000>; /* CS0, offset 0, IO size 128K */
+
+ gpmc,sync-read;
+ gpmc,sync-write;
+ gpmc,burst-length = <16>;
+ gpmc,burst-read;
+ gpmc,burst-wrap;
+ gpmc,burst-write;
+ gpmc,device-width = <2>;
+ gpmc,mux-add-data = <2>;
+ gpmc,cs-on-ns = <0>;
+ gpmc,cs-rd-off-ns = <87>;
+ gpmc,cs-wr-off-ns = <87>;
+ gpmc,adv-on-ns = <0>;
+ gpmc,adv-rd-off-ns = <10>;
+ gpmc,adv-wr-off-ns = <10>;
+ gpmc,oe-on-ns = <15>;
+ gpmc,oe-off-ns = <87>;
+ gpmc,we-on-ns = <0>;
+ gpmc,we-off-ns = <87>;
+ gpmc,rd-cycle-ns = <112>;
+ gpmc,wr-cycle-ns = <112>;
+ gpmc,access-ns = <81>;
+ gpmc,page-burst-access-ns = <15>;
+ gpmc,bus-turnaround-ns = <0>;
+ gpmc,cycle2cycle-delay-ns = <0>;
+ gpmc,wait-monitoring-ns = <0>;
+ gpmc,clk-activation-ns = <5>;
+ gpmc,wr-data-mux-bus-ns = <30>;
+ gpmc,wr-access-ns = <81>;
+ gpmc,sync-clk-ps = <15000>;
+
+ x-loader@0 {
+ label = "X-Loader";
+ reg = <0 0x80000>;
+ };
+
+ bootloaders@80000 {
+ label = "U-Boot";
+ reg = <0x80000 0x1c0000>;
+ };
+
+ bootloaders_env@240000 {
+ label = "U-Boot Env";
+ reg = <0x240000 0x40000>;
+ };
+
+ kernel@280000 {
+ label = "Kernel";
+ reg = <0x280000 0x600000>;
+ };
+
+ filesystem@880000 {
+ label = "File System";
+ reg = <0x880000 0>; /* 0 = MTDPART_SIZ_FULL */
+ };
+
+ };
+};
--
2.12.2
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