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ARM: OMAP: dts: N950/N9: fix onenand timings

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Commit a758f50f10 ("mtd: onenand: omap2: Configure driver from DT")
started using DT specified timings for GPMC, and as a result the
OneNAND stopped working on N950/N9 as we had wrong values in the DT.
Fix by updating the values to bootloader timings that have been tested
to be working on both Nokia N950 and N9.

Fixes: a758f50f10 ("mtd: onenand: omap2: Configure driver from DT")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Aaro Koskinen 2018-12-23 20:24:13 +02:00 committed by Tony Lindgren
parent bfeffd1552
commit 8443e4843e
1 changed files with 28 additions and 14 deletions
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42
arch/arm/boot/dts/omap3-n950-n9.dtsi
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@ -370,6 +370,19 @@
compatible = "ti,omap2-onenand";
reg = <0 0 0x20000>; /* CS0, offset 0, IO size 128K */
/*
* These timings are based on CONFIG_OMAP_GPMC_DEBUG=y reported
* bootloader set values when booted with v4.19 using both N950
* and N9 devices (OneNAND Manufacturer: Samsung):
*
* gpmc cs0 before gpmc_cs_program_settings:
* cs0 GPMC_CS_CONFIG1: 0xfd001202
* cs0 GPMC_CS_CONFIG2: 0x00181800
* cs0 GPMC_CS_CONFIG3: 0x00030300
* cs0 GPMC_CS_CONFIG4: 0x18001804
* cs0 GPMC_CS_CONFIG5: 0x03171d1d
* cs0 GPMC_CS_CONFIG6: 0x97080000
*/
gpmc,sync-read;
gpmc,sync-write;
gpmc,burst-length = <16>;
@ -379,26 +392,27 @@
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,cs-rd-off-ns = <122>;
gpmc,cs-wr-off-ns = <122>;
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,adv-rd-off-ns = <15>;
gpmc,adv-wr-off-ns = <15>;
gpmc,oe-on-ns = <20>;
gpmc,oe-off-ns = <122>;
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,we-off-ns = <122>;
gpmc,rd-cycle-ns = <148>;
gpmc,wr-cycle-ns = <148>;
gpmc,access-ns = <117>;
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>;
gpmc,clk-activation-ns = <10>;
gpmc,wr-data-mux-bus-ns = <40>;
gpmc,wr-access-ns = <117>;
gpmc,sync-clk-ps = <15000>; /* TBC; Where this value came? */
/*
* MTD partition table corresponding to Nokia's MeeGo 1.2