clk: imx6sx: disable unnecessary clocks during clock initialization

Commit Message

Anson Huang May 17, 2018, 5 a.m. UTC

Disable those unnecessary clocks during kernel boot up to save power,
those modules clock should be managed by modules driver in runtime.

Signed-off-by: Anson Huang <[e-mail]>
---
 drivers/clk/imx/clk-imx6sx.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

Comments

Shawn Guo May 20, 2018, 1:01 p.m. UTC | #1

On Thu, May 17, 2018 at 01:00:47PM +0800, Anson Huang wrote:
> Disable those unnecessary clocks during kernel boot up to save power,
> those modules clock should be managed by modules driver in runtime.
> 
> Signed-off-by: Anson Huang <[e-mail]>

Acked-by: Shawn Guo <[e-mail]>

Stephen Boyd June 1, 2018, 7:10 p.m. UTC | #2

Quoting Anson Huang (2018-05-16 22:00:47)
> Disable those unnecessary clocks during kernel boot up to save power,
> those modules clock should be managed by modules driver in runtime.
> 
> Signed-off-by: Anson Huang <[e-mail]>
> ---

Applied to clk-next

Patch

diff --git a/drivers/clk/imx/clk-imx6sx.c b/drivers/clk/imx/clk-imx6sx.c
index 0178ee2..10c771b 100644
--- a/drivers/clk/imx/clk-imx6sx.c
+++ b/drivers/clk/imx/clk-imx6sx.c
@@ -97,12 +97,7 @@  static int const clks_init_on[] __initconst = {
 	IMX6SX_CLK_IPMUX1, IMX6SX_CLK_IPMUX2, IMX6SX_CLK_IPMUX3,
 	IMX6SX_CLK_WAKEUP, IMX6SX_CLK_MMDC_P0_FAST, IMX6SX_CLK_MMDC_P0_IPG,
 	IMX6SX_CLK_ROM, IMX6SX_CLK_ARM, IMX6SX_CLK_IPG, IMX6SX_CLK_OCRAM,
-	IMX6SX_CLK_PER2_MAIN, IMX6SX_CLK_PERCLK, IMX6SX_CLK_M4,
-	IMX6SX_CLK_QSPI1, IMX6SX_CLK_QSPI2, IMX6SX_CLK_UART_IPG,
-	IMX6SX_CLK_UART_SERIAL, IMX6SX_CLK_I2C3, IMX6SX_CLK_ECSPI5,
-	IMX6SX_CLK_CAN1_IPG, IMX6SX_CLK_CAN1_SERIAL, IMX6SX_CLK_CAN2_IPG,
-	IMX6SX_CLK_CAN2_SERIAL, IMX6SX_CLK_CANFD, IMX6SX_CLK_EPIT1,
-	IMX6SX_CLK_EPIT2,
+	IMX6SX_CLK_PER2_MAIN, IMX6SX_CLK_PERCLK, IMX6SX_CLK_TZASC1,
 };
 
 static const struct clk_div_table clk_enet_ref_table[] = {