[1/4] ARM: dts: omap3-igep: OneNAND support

Commit Message

Ladislav Michl Feb. 11, 2017, 1:01 p.m. UTC

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 <[e-mail]>
---
 arch/arm/boot/dts/omap3-igep.dtsi | 52 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

Comments

Tony Lindgren Feb. 28, 2017, 5:11 p.m. UTC | #1

* Ladislav Michl <[e-mail]> [170211 05:02]:
> 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.

FYI, I'll apply this into omap-for-v4.11/dt when I set it up after
v4.11-rc1.

Then I've applied these two into omap-for-v4.11/fixes:

ARM: OMAP2+: Remove legacy gpmc-nand.c
ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure

The rest I got lost with in the thread, so please repost the
missing parts as needed :)

Regards,

Tony
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to [e-mail]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch

diff --git a/arch/arm/boot/dts/omap3-igep.dtsi b/arch/arm/boot/dts/omap3-igep.dtsi
index e268efde6c6d..f75cbf297798 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 */
@@ -124,8 +134,50 @@ 
 		gpmc,wr-access-ns = <40>;
 		gpmc,wr-data-mux-bus-ns = <0>;
 
+ 		#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";
 	};
 };