linux-kernel - Re: [RFC PATCH] ARM: dts: rockchip: increase the mclk

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Date:	Tue, 02 Feb 2016 22:43:36 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	Xing Zheng <zhengxing@...k-chips.com>
Cc:	linux-rockchip@...ts.infradead.org, keescook@...gle.com,
	leozwang@...gle.com, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] ARM: dts: rockchip: increase the mclk_fs to 512 for kylin board

Am Freitag, 29. Januar 2016, 16:49:21 schrieb Xing Zheng:
> If we playback the 8KHz FS audio with the 256 mclk_fs, we need the
> mclk = 256 * 8000 = 2.048MHz, the frac div is 594 / 2.048 = 290,
> the frac div value 0x00809015 set to the CRU_CLKSEL7_CON will cause
> to hang.
> 
> We increase the mclk_fs to 512, will get the mclk = 512 * 8000 =
> 4.096MHz, use 0x01009015 instead of 0x00809015 to work around this
> issue. We will keep tracking it.
> 
> Signed-off-by: Xing Zheng <zhengxing@...k-chips.com>

applied to my dts32 branch for 4.6


Thanks
Heiko