[PATCH 1/3] arm: socfpga: Set the SDMMC clock phase in system manager

Dinh Nguyen dinh.linux at gmail.com
Wed Sep 25 23:00:14 EDT 2013


Hi Chris,

On Sep 25, 2013, at 8:50 PM, Chris Ball wrote:

> Hi Dinh,
> 
> On Sat, Sep 14 2013, Pavel Machek wrote:
>>> From: Dinh Nguyen <dinguyen at altera.com>
>>> 
>>> Add functionality in the System Manager to set the SDR settings for the
>>> SD/MMC IP.
>>> 
>>> Signed-off-by: Dinh Nguyen <dinguyen at altera.com>
>>> Cc: Pavel Machek <pavel at denx.de>
>> 
>>> +void socfpga_sysmgr_set_dwmmc_drvsel_smpsel(void)
>>> +{
>>> +	struct device_node *np;
>>> +	u32 timing[2];
>>> +	u32 hs_timing;
>>> +
>>> +	np = of_find_compatible_node(NULL, NULL, "altr,socfpga-dw-mshc");
>>> +	of_property_read_u32_array(np, "samsung,dw-mshc-sdr-timing", timing, 2);
>>> +	hs_timing = SYSMGR_SDMMC_CTRL_SET(timing[0], timing[1]);
>>> +	writel(hs_timing, sys_manager_base_addr + SYSMGR_SDMMCGRP_CTRL_OFFSET);
>>> +}
>>> +EXPORT_SYMBOL(socfpga_sysmgr_set_dwmmc_drvsel_smpsel);
>> 
>> To get the abstraction right, would it make sense to have timing
>> parameters as arguments to socfpga_sysmgr_set_dwmmc_drvsel_smpsel(),
>> so that sysmgr code is not walking MMC's device tree directly?
> 
> I think this review comment from Pavel is still open, please reply.

I sent a Rev 2 that addresses this comment on 9/23. Let me know if I need to resend it in case you missed it.

Thanks,
Dinh
> Thanks,
> 
> - Chris.
> -- 
> Chris Ball   <cjb at laptop.org>   <http://printf.net/>




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