From 01aa1a5c468b6407d2f5b1d76e27b436b2d3d45f Mon Sep 17 00:00:00 2001 From: Ladislav Michl Date: Fri, 17 Mar 2017 12:12:00 -0700 Subject: ARM: dts: omap3-igep: OneNAND support Add OneNAND node for IGEP and leave it disabled by default. It is up to bootloader to enable proper node. Timing just works, but values are copied over from N900 as I was unable to find chip datasheet. Signed-off-by: Ladislav Michl Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-igep.dtsi | 52 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/arch/arm/boot/dts/omap3-igep.dtsi b/arch/arm/boot/dts/omap3-igep.dtsi index e268efde6c6d..4ad7d5565906 100644 --- a/arch/arm/boot/dts/omap3-igep.dtsi +++ b/arch/arm/boot/dts/omap3-igep.dtsi @@ -37,6 +37,13 @@ }; &omap3_pmx_core { + gpmc_pins: pinmux_gpmc_pins { + pinctrl-single,pins = < + /* OneNAND seems to require PIN_INPUT on clock. */ + OMAP3_CORE1_IOPAD(0x20be, PIN_INPUT | MUX_MODE0) /* gpmc_clk.gpmc_clk */ + >; + }; + uart1_pins: pinmux_uart1_pins { pinctrl-single,pins = < OMAP3_CORE1_IOPAD(0x2182, PIN_INPUT | MUX_MODE0) /* uart1_rx.uart1_rx */ @@ -98,6 +105,9 @@ }; &gpmc { + pinctrl-names = "default"; + pinctrl-0 = <&gpmc_pins>; + nand@0,0 { compatible = "ti,omap2-nand"; reg = <0 0 4>; /* CS0, offset 0, IO size 4 */ @@ -126,6 +136,48 @@ #address-cells = <1>; #size-cells = <1>; + + status = "okay"; + }; + + onenand@0,0 { + 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_DEVWIDTH_16BIT */ + gpmc,mux-add-data = <2>; /* GPMC_MUX_AD */ + 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>; + + #address-cells = <1>; + #size-cells = <1>; + + status = "disabled"; }; }; -- cgit v1.2.1