From: shawn.guo@linaro.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] ARM: imx6sx: Set PLL2 as parent of QSPI clocks
Date: Mon, 5 Jan 2015 21:26:49 +0800 [thread overview]
Message-ID: <20150105132648.GD24511@dragon> (raw)
In-Reply-To: <1418758230-10246-1-git-send-email-festevam@gmail.com>
On Tue, Dec 16, 2014 at 05:30:28PM -0200, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> The default qspi2_clk_sel field of register CCM_CS2CDR contains '110' which is
> marked as 'reserved', so we can't rely on the default value.
>
> Provide a proper parent for QSPI clocks to avoid a kernel oops:
>
> [ 1.037920] Division by zero in kernel.
> [ 1.041807] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc7-next-20141204-00002-g5aa23e1 #2143
> [ 1.050967] Hardware name: Freescale i.MX6 SoloX (Device Tree)
> [ 1.056853] Backtrace:
> [ 1.059360] [<80011ea0>] (dump_backtrace) from [<8001203c>] (show_stack+0x18/0x1c)
> [ 1.066982] r6:00000000 r5:00000000 r4:00000000 r3:00000000
> [ 1.072754] [<80012024>] (show_stack) from [<806b7100>] (dump_stack+0x88/0xa4)
> [ 1.080038] [<806b7078>] (dump_stack) from [<80011d20>] (__div0+0x18/0x20)
> [ 1.086958] r5:be018500 r4:be017c00
> [ 1.090600] [<80011d08>] (__div0) from [<802aa418>] (Ldiv0+0x8/0x10)
> [ 1.097012] [<80504fbc>] (clk_divider_set_rate) from [<80503ddc>] (clk_change_rate+0x14c/0x17c)
> [ 1.105759] r7:00000000 r6:00000000 r5:be018500 r4:00000000
> [ 1.111516] [<80503c90>] (clk_change_rate) from [<80503ea0>] (clk_set_rate+0x94/0x98)
> [ 1.119391] r8:be7e0368 r7:00000000 r6:be11a000 r5:be018500 r4:00000000 r3:00000000
> [ 1.127290] [<80503e0c>] (clk_set_rate) from [<80410558>] (fsl_qspi_probe+0x23c/0x75c)
> [ 1.135260] r5:be11a010 r4:be350010
> [ 1.138900] [<8041031c>] (fsl_qspi_probe) from [<80385a18>] (platform_drv_probe+0x50/0xac)
>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Applied all 3, thanks.
prev parent reply other threads:[~2015-01-05 13:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-16 19:30 [PATCH v2 1/3] ARM: imx6sx: Set PLL2 as parent of QSPI clocks Fabio Estevam
2014-12-16 19:30 ` [PATCH v2 2/2] ARM: dts: imx6sx-sdb: Add QSPI support Fabio Estevam
2014-12-16 19:30 ` [PATCH v2 3/3] ARM: imx_v6_v7_defconfig: Select SPI_FSL_QUADSPI by default Fabio Estevam
2015-01-05 13:26 ` Shawn Guo [this message]
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