[U-Boot] [PATCH] OMAP5: Add support for the SOM5_EVB board (OMAP5430-based)

[Tom Rini <trini@ti.com>]

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On 04/26/2013 11:59 AM, Lubomir Popov wrote:
> Hi Tom,
> 
> On 25/04/13 22:01, Tom Rini wrote:
>> On Mon, Apr 01, 2013 at 05:06:16PM +0300, Lubomir Popov wrote:
>> 
>>> Signed-off-by: Lubomir Popov <lpopov@mm-sol.com>
>> 
>> Thought I had reviewed this already, sorry.
> Thanks for your review. During the past month U-Boot has changed; I
> have tried to follow as well (although I'm engaged with other
> stuff) and some of your remarks have been already fixed. Please see
> my comments inline below.
> 
> Anyway, I guess that a V2 patch shall have to be referenced against
> the current master. Or against u-boot-ti/next?

OK, sorry for the late reply again.  Now that u-boot-arm has resynced
with master, I've also resynced and gotten a pull done.  You can use
either u-boot-arm/master or u-boot-ti/master.

> 
> Please note that for this board to work with the defined
> configuration, the following patches are also required
> (unfortunately some are already quite old and might cause 
> conflicts):
> 
> - Power: http://patchwork.ozlabs.org/patch/232732/. Potential
> conflict with Nishanth Menon's series of March 26, applied to
> u-boot-ti/next. - For I2C support: * The patch series of Apr. 8
> that enables I2C4 and I2C5 (applied to u-boot-ti/next; affects all
> OMAP5 boards). * The modified i2c driver:
> http://patchwork.ozlabs.org/patch/233823/ (useful for all OMAP3/4/5
> boards). - For USB support: *
> http://patchwork.ozlabs.org/patch/235684/ (affects all OMAP5
> boards) * http://patchwork.ozlabs.org/patch/232742/ (affects all
> OMAP5 boards)

OK.  Please make sure these still apply and if not update and re-send.
 I think I've already grabbed a few of these.

[snip]
>>> +#define USB_HOST_HS_CLKCTRL_MASK	0x0100D7C0	/*
>>> CM_L3INIT_USB_HOST_HS_CLKCTRL */ +#define
>>> USB_TLL_HS_CLKCTRL_MASK		0x00000700	/*
>>> CM_L3INIT_USB_TLL_HS_CLKCTRL */
>> 
>> Some header please.
> Currently moved to board header. I wondered if a common OMAP header
> wouldn't be more suitable, but having in mind that the utilized USB
> ports (and thus the clocks that should be enabled) vary from board
> to board, perhaps this (i.e. board header) is the best place.

The masks won't change tho, yes?  Common header somewhere.

>> 
>>> +	 * TODO: Replace this ugly hardcoding with proper defines +
>>> */ +	writel(0x0100, 0x4ae0a310);
>> 
>> Again, do please.
> This should be (*scrm)->auxclk0. The problem is that the
> omap5_scrm_regs struct (holding the auxclk0 member) has to be
> defined somewhere in the common OMAP5 headers. Sricharan? Or should
> I hack around?

Add it to the most likely struct in the headers.

[snip]
>> Ah, since you do have this part already, just update the rest as
>> I had said.
> /* Machine type for Linux */ #ifndef MACH_TYPE_SOM5_EVB #define
> MACH_TYPE_SOM5_EVB		4545 #endif #define CONFIG_MACH_TYPE
> MACH_TYPE_SOM5_EVB
> 
> Is this OK?

I think we'd decided in general to not do ifndef and just always
define it.

>>> +/* Enable all clocks: */ +/*#define
>>> CONFIG_SYS_CLOCKS_ENABLE_ALL*/ + +#define
>>> CONFIG_SYS_ENABLE_PADS_ALL	/* Enable all PADS for now */
>> 
>> Not allowed.
> Shall see to it. What if one needs to test pins and connections
> during board bring-up, e.g. via gpio commands?

Then code in what you need at the time, drop later.

[snip]
>> This is a little un-clear. If MMC will be in mmc like the uEVM,
>> just do so, and if no storage of env, leave it as NOWHERE.
> Cerrently looks like this: /* MMC ENV related defines */ #undef
> CONFIG_ENV_IS_IN_MMC #undef CONFIG_SYS_MMC_ENV_DEV #undef
> CONFIG_ENV_OFFSET #define CONFIG_ENV_IS_NOWHERE

Shouldn't need that now, omap5_common is common and the env bits got
moved to omap5_uevm.h

[snip]
>>> +/* + * memtest setup + */ +#define CONFIG_SYS_MEMTEST_START
>>> 0xb8000000 +#define CONFIG_SYS_MEMTEST_END
>>> (CONFIG_SYS_MEMTEST_START + (256 << 20)) +/* Undef following
>>> two for simple mtest */ +#define CONFIG_SYS_ALT_MEMTEST 
>>> +#define CONFIG_SYS_MEMTEST_SCRATCH	0x81000000
>> 
>> Please see doc/README.memory-test and update as mtest is no
>> longer a default command.
> Now the config tail looks like this:
> 
> /* Undef/remove after bring-up: */ #define CONFIG_CMD_MEMTEST
> 
> /* Disabled commands */ #undef CONFIG_CMD_SAVEENV
> 
> /* Prompt */ #define CONFIG_SYS_PROMPT		"SOM5_EVB # "
> 
> #ifdef CONFIG_CMD_MEMTEST /* Undef following two for simple mtest
> */ #define CONFIG_SYS_ALT_MEMTEST #define
> CONFIG_SYS_MEMTEST_SCRATCH	0xb7fffff0 #ifdef
> CONFIG_SYS_ALT_MEMTEST #undef CONFIG_SYS_MEMTEST_START #define
> CONFIG_SYS_MEMTEST_START	0xb8000000 #undef CONFIG_SYS_MEMTEST_END 
> #define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + (256 <<
> 20)) #endif #endif /* CONFIG_CMD_MEMTEST */

OK.

- -- 
Tom
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