diff options
| author |   Stefan Agner <stefan@agner.ch> | 2016-06-28 11:02:28 +0530 |
|---|---|---|
| committer |   Michael Turquette <mturquette@baylibre.com> | 2016-07-08 11:38:17 -0700 |
| commit | a06498297d233fd5074da14f25e72c2f104561d3 (patch) | |
| tree | 2bfa2d43fb3d2247797a4e2cb105647fb0194ca1 /drivers/clk/imx | |
| parent | clk: clk-conf: Fix error message when clock isn't found (diff) | |
| download | linux-dev-a06498297d233fd5074da14f25e72c2f104561d3.tar.xz linux-dev-a06498297d233fd5074da14f25e72c2f104561d3.zip | |
clk: imx: vf610: Disable automatic clock gating for lpuart in LPSTOP mode
In order to allow wake support in STOP sleep mode, clocks are needed. Use
imx_clk_gate2_cgr to disable automatic clock gating in low power mode STOP.
This allows to enable wake by UART using:
echo enabled > /sys/class/tty/ttyLP0/power/wakeup
However, if wake is not enabled, the driver should disable the clocks explicitly
to save power.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160628053235.5114-3-bhuvanchandra.dv@toradex.com
Diffstat (limited to 'drivers/clk/imx')
| -rw-r--r-- | drivers/clk/imx/clk-vf610.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/clk/imx/clk-vf610.c b/drivers/clk/imx/clk-vf610.c index 3a1f24475ee4..0476353ab423 100644 --- a/drivers/clk/imx/clk-vf610.c +++ b/drivers/clk/imx/clk-vf610.c @@ -315,12 +315,12 @@ static void __init vf610_clocks_init(struct device_node *ccm_node) clk[VF610_CLK_PIT] = imx_clk_gate2("pit", "ipg_bus", CCM_CCGR1, CCM_CCGRx_CGn(7)); - clk[VF610_CLK_UART0] = imx_clk_gate2("uart0", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(7)); - clk[VF610_CLK_UART1] = imx_clk_gate2("uart1", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(8)); - clk[VF610_CLK_UART2] = imx_clk_gate2("uart2", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(9)); - clk[VF610_CLK_UART3] = imx_clk_gate2("uart3", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(10)); - clk[VF610_CLK_UART4] = imx_clk_gate2("uart4", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(9)); - clk[VF610_CLK_UART5] = imx_clk_gate2("uart5", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(10)); + clk[VF610_CLK_UART0] = imx_clk_gate2_cgr("uart0", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(7), 0x2); + clk[VF610_CLK_UART1] = imx_clk_gate2_cgr("uart1", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(8), 0x2); + clk[VF610_CLK_UART2] = imx_clk_gate2_cgr("uart2", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(9), 0x2); + clk[VF610_CLK_UART3] = imx_clk_gate2_cgr("uart3", "ipg_bus", CCM_CCGR0, CCM_CCGRx_CGn(10), 0x2); + clk[VF610_CLK_UART4] = imx_clk_gate2_cgr("uart4", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(9), 0x2); + clk[VF610_CLK_UART5] = imx_clk_gate2_cgr("uart5", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(10), 0x2); clk[VF610_CLK_I2C0] = imx_clk_gate2("i2c0", "ipg_bus", CCM_CCGR4, CCM_CCGRx_CGn(6)); clk[VF610_CLK_I2C1] = imx_clk_gate2("i2c1", "ipg_bus", CCM_CCGR4, CCM_CCGRx_CGn(7)); |