[PATCH 00/11] Fixes for Nokia RX-51

["Pali Rohár" <pali@kernel.org>]

On Tuesday 14 April 2020 14:01:44 Pali Roh?r wrote:
> On Tuesday 14 April 2020 17:21:24 Lokesh Vutla wrote:
> > On 14/04/20 4:47 PM, Pali Roh?r wrote:
> > > On Tuesday 14 April 2020 16:14:08 Lokesh Vutla wrote:
> > >> On 14/04/20 4:01 PM, Pali Roh?r wrote:
> > >>> On Tuesday 14 April 2020 15:53:14 Lokesh Vutla wrote:
> > >>>> On 13/04/20 4:11 PM, Pali Roh?r wrote:
> > >>>>> On Wednesday 01 April 2020 00:35:07 Pali Roh?r wrote:
> > >>>>>> This patch series contain fixes for Nokia RX-51 board (aka N900).
> > >>>>>> After these changes it is possible to run U-Boot in qemu emulator again.
> > >>>>>> And U-Boot can boot kernel image from RAM, eMMC or OneNAND memory without
> > >>>>>> problem.
> > >>>>>>
> > >>>>>> Pali Roh?r (11):
> > >>>>>>   Nokia RX-51: Update my email address
> > >>>>>>   Nokia RX-51: Add README.nokia_rx51 file to MAINTAINERS
> > >>>>>>   Nokia RX-51: Move comment about CONFIG_SYS_TEXT_BASE to correct place
> > >>>>>>   Nokia RX-51: Move code from defconfig back to C header file
> > >>>>>>   Nokia RX-51: Revert back onenand defitions
> > >>>>>>   Nokia RX-51: Remove PART* macros
> > >>>>>>   Nokia RX-51: Remember setup_console_atag option
> > >>>>>>   Nokia RX-51: Enable CONFIG_CONSOLE_MUX
> > >>>>>>   Nokia RX-51: Disable some unused features to decrease size of u-boot
> > >>>>>>     binary
> > >>>>>>   Nokia RX-51: Update README.nokia_rx51
> > >>>>>>   Nokia RX-51: Add automated test for running RX-51 build in qemu
> > >>>>>
> > >>>>> Hello! Could you please review this patch series?
> > >>>>
> > >>>> Series as such looks good to me. But as I see that thread, this series could not
> > >>>> boot on real hardware. Is that right?
> > >>>
> > >>> Without these patches U-Boot does not boot on both emulated and real HW.
> > >>> With this patch series U-Boot boots at least on emulated env.
> > >>>
> > >>> Older mainline U-Boot version worked fine on both emulated and real HW
> > >>> so something was broken in U-Boot.
> > >>
> > >> So the issue is not completely fixed. Can we get the fix for real hardware
> > >> included in this series?
> > > 
> > > I do not have hw equipment for debugging nor I do not know what happened
> > > that U-Boot stopped working. I already asked for help what happened with
> > > omap i2c code in u-boot that stopped working but nobody answered me yet.
> > 
> > I don;t know when it stopped working. But I2C has migrated to Driver-Model. Did
> > you check if DM_I2C is enabled for nokia rx-51?
> 
> In .config I do not see any DM_I2C string. Should I something enable?
> What is needed for OMAP I2C? In .config is:
> 
> CONFIG_SYS_I2C_OMAP24XX=y
> CONFIG_SYS_OMAP24_I2C_SLAVE=1
> CONFIG_SYS_OMAP24_I2C_SPEED=100000
> CONFIG_SYS_I2C_BUS_MAX=3

I tried to enable CONFIG_DM and CONFIG_DM_I2C, but it threw following errors:

  GEN     include/autoconf.mk.dep
In file included from include/config.h:8,
                 from ./include/common.h:16:
include/config_fallbacks.h:51:4: error: #error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
 #  error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
    ^~~~~
In file included from include/config.h:8,
                 from ./include/common.h:16:
include/config_fallbacks.h:51:4: error: #error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
 #  error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
    ^~~~~

Next I tried to remove CONFIG_SYS_I2C from include/configs/nokia_rx51.h but it threw another error:

board/nokia/rx51/rx51.c: In function ?rx51_kp_tstc?:
board/nokia/rx51/rx51.c:628:3: warning: implicit declaration of function ?i2c_read?; did you mean ?mmc_read?? [-Wimplicit-function-declaration]
   i2c_read(TWL4030_CHIP_KEYPAD,
   ^~~~~~~~
   mmc_read

arm-linux-gnueabi-ld.bfd: board/nokia/rx51/built-in.o: in function `rx51_kp_tstc':
/home/pali/develop/u-boot/u-boot/board/nokia/rx51/rx51.c:628: undefined reference to `i2c_read'

So looks like that CONFIG_DM_I2C is not possible to use it right now.

> But strange is that there is no problem in qemu emulator without any
> crash.
> 
> > Thanks and regards,
> > Lokesh
> > 
> > >