linux-kernel - Re: [PATCH v4 0/5] Add Allwinner A31 SPI controller support

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Message-ID: <20140207192817.GN3192@lukather>
Date:	Fri, 7 Feb 2014 20:28:17 +0100
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Mark Brown <broonie@...nel.org>,
	Mike Turquette <mturquette@...aro.org>,
	Emilio Lopez <emilio@...pez.com.ar>
Cc:	linux-sunxi@...glegroups.com, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, kevin.z.m.zh@...il.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	zhuzhenhua@...winnertech.com
Subject: Re: [PATCH v4 0/5] Add Allwinner A31 SPI controller support

On Wed, Feb 05, 2014 at 02:05:02PM +0100, Maxime Ripard wrote:
> Hi everyone,
> 
> This patchset brings support for the SPI controller found in the
> Allwinner A31 SoC.
> 
> Even though the controller supports DMA, the driver only supports PIO
> mode for now. This driver will be used to bring up and test DMA on the
> SoC, so support for the DMA will come eventually.
> 
> It doesn't support transfer larger than the FIFO size (128 bytes) for
> now, I expect it to be fixed in the future.
> 
> Thanks!
> Maxime
> 
> Changes from v3:
>   - Rebased on top of 3.14-rc1
>   - Removed the dependency on devm_spi_alloc_master
>   - Modified the pm_runtime code according to reviews
> 
> Changes from v2:
>   - Removed the select on runtime_pm
>   - Fixed the clock error messages
>   - Trigger the CS manually, and honour the enable bit in set_cs
>   - Convert to devm_* functions
>   - Remove useless clk_disable_unprepare in probe
> 
> Changes from v1:
>   - Switched to using the transfer_one and set_cs callbacks
>   - Switched to using runtime_pm
>   - Report an error when we try to do a transfer larger than the FIFO
>     size, instead of silently timeouting.
>   - Added a Kconfig symbol
>   - Move the clock ratio change at transfer time
>   - Fixed the PLL6 cell size in the DTSI
>   - A few fixes here and there: typos, etc.
> 
> Maxime Ripard (5):
>   clk: sunxi: Add support for PLL6 on the A31
>   ARM: sun6i: dt: Add PLL6 and SPI module clocks
>   spi: sunxi: Add Allwinner A31 SPI controller driver
>   ARM: sun6i: dt: Add SPI controllers to the A31 DTSI
>   ARM: sunxi: Enable A31 SPI and SID in the defconfig

Applied patch 2 and 4 to sunxi/dt-for-3.15, and patch 5 to sunxi/defconfig-for-3.15

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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