diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2014-12-16 17:30:28 -0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-27 08:29:44 -0800 |
| commit | 64c2607ba8867e77bdb09cec99f0641146f08a09 (patch) | |
| tree | b0223e4ada2de9c66ac4767034847a218caef8ab | |
| parent | 2e953b852039b7de26642dedac90275333aaa279 (diff) | |
ARM: imx6sx: Set PLL2 as parent of QSPI clocks
commit 7c168ed898931f6c3314d696e63cf993378ca192 upstream.
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>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/mach-imx/clk-imx6sx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/clk-imx6sx.c b/arch/arm/mach-imx/clk-imx6sx.c index 17354a11356f..5a3e5a159e70 100644 --- a/arch/arm/mach-imx/clk-imx6sx.c +++ b/arch/arm/mach-imx/clk-imx6sx.c @@ -558,6 +558,9 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node) clk_set_parent(clks[IMX6SX_CLK_GPU_CORE_SEL], clks[IMX6SX_CLK_PLL3_PFD0]); clk_set_parent(clks[IMX6SX_CLK_GPU_AXI_SEL], clks[IMX6SX_CLK_PLL3_PFD0]); + clk_set_parent(clks[IMX6SX_CLK_QSPI1_SEL], clks[IMX6SX_CLK_PLL2_BUS]); + clk_set_parent(clks[IMX6SX_CLK_QSPI2_SEL], clks[IMX6SX_CLK_PLL2_BUS]); + /* Set initial power mode */ imx6q_set_lpm(WAIT_CLOCKED); } |