[2/2] memory: omap-gpmc: Add Kconfig option for debug

Commit Message

Tony Lindgren Feb. 5, 2016, 6:10 a.m. UTC

* Ivaylo Dimitrov <[e-mail]> [160203 08:51]:
> - flashed maemo rootfs
> 
> sudo flasher-3.5 -f -F RX-51_2009SE_20.2010.36-2_PR_COMBINED_MR0_ARM.bin
> --flash-only=rootfs -R
> 
> - booted to maemo and powered the device off
> 
> sudo flasher-3.5 -k zImage  -l -b"init=/sbin/preinit ubi.mtd=rootfs
> root=ubi0:rootfs rootfstype=ubifs rootflags=bulk_read,no_chk_data_crc rw
> mtdoops.mtddev=log  omapfb_vram=7M omapfb.mode=lcd:848x480-16
> nokia-modem.pm=0"

This seems to fix things here for legacy booting and booting the
maemo zImage after dts image. Care to give it a try?

Basically onenand after reset is in wrong state, have not looked
up the bits yet. Will post a better patch when I get a chance
over next few days.

Regards,

Tony

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Comments

Ivaylo Dimitrov Feb. 5, 2016, 2:43 p.m. UTC | #1

On  5.02.2016 08:10, Tony Lindgren wrote:

> This seems to fix things here for legacy booting and booting the
> maemo zImage after dts image. Care to give it a try?
>
> Basically onenand after reset is in wrong state, have not looked
> up the bits yet. Will post a better patch when I get a chance
> over next few days.
>
> Regards,
>
> Tony

Yep, that looks to fix the things, I submitted a patch "[PATCH] ARM: 
OMAP2+: Fix onenand initialization to avoid filesystem corruption" (it 
was supposed to be a reply to this mail, but my git-send-mail-fu failed 
on me as always :) )

Thanks,
Ivo
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Patch

--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -104,6 +104,7 @@  static void set_onenand_cfg(void __iomem *onenand_base)
 	u32 reg;
 
 	reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
+	reg = 0x06c0;
 	reg &= ~((0x7 << ONENAND_SYS_CFG1_BRL_SHIFT) | (0x7 << 9));
 	reg |=	(latency << ONENAND_SYS_CFG1_BRL_SHIFT) |
 		ONENAND_SYS_CFG1_BL_16;
@@ -289,6 +290,7 @@  static int omap2_onenand_setup_async(void __iomem *onenand_base)
 		}
 	}
 
+	onenand_async.sync_write = true;
 	omap2_onenand_calc_async_timings(&t);
 
 	ret = gpmc_cs_program_settings(gpmc_onenand_data->cs, &onenand_async);