kernel/drivers/clk/imx/clk-gate2.c, branch linux-6.9.y

clk: imx: gate2: Remove unused variable ret

2020-11-10T01:08:03Z

This patch fixes below warning reported by coccicheck: ./clk-gate2.c:57:5-8: Unneeded variable: "ret". Return "0" on line 68 Reported-by: Hulk Robot Signed-off-by: Zou Wei Reviewed-by: Stephen Boyd Signed-off-by: Shawn Guo

clk: imx: gate2: Add locking in is_enabled op

2020-11-02T23:55:41Z

Protect against enabling/disabling the gate while we're checking if it is enabled. Signed-off-by: Abel Vesa Reviewed-by: Sascha Hauer Signed-off-by: Shawn Guo

clk: imx: gate2: Add cgr_mask for more flexible number of control bits

2020-11-02T23:55:38Z

On some i.MX8 platforms, there are HW gates that share the same bit. So in order to make this clock type more usable, use a mask to specify how many bits belong to those HW gates. Signed-off-by: Abel Vesa Reviewed-by: Sascha Hauer Signed-off-by: Shawn Guo

clk: imx: gate2: Check if clock is enabled against cgr_val

2020-11-02T23:55:35Z

Seems the logic here was wrong all along. For example, if the cgr_val is 2 (0b10), the clk_gate2_reg_is_enabled would report the clock as disabled. So check against cgr_val instead. Signed-off-by: Abel Vesa Reviewed-by: Sascha Hauer Signed-off-by: Shawn Guo

clk: imx: gate2: Keep the register writing in on place

2020-11-02T23:55:33Z

Move all the register writing to the newly added clk_gate2_do_shared_clks and call that everywhere need needed. Cleans up the code a little bit. Signed-off-by: Abel Vesa Reviewed-by: Sascha Hauer Signed-off-by: Shawn Guo

clk: imx: gate2: Remove the IMX_CLK_GATE2_SINGLE_BIT special case

2020-11-02T23:55:11Z

This was a hack which would allow multiple HW gates to be controlled by a single bit. The only user of this is the imx_dev_clk_hw_gate_shared which is not used anywhere as of now. Basically, complicates the logic of the driver for no reason. Signed-off-by: Abel Vesa Reviewed-by: Sascha Hauer Signed-off-by: Shawn Guo

clk: imx: gate2: Fix a few typos

2020-09-13T01:21:29Z

A few words were misspelled in this comment. Signed-off-by: Jonathan Neuschäfer Reviewed-by: Stephen Boyd Signed-off-by: Shawn Guo

clk: imx: Support building i.MX common clock driver as module

2020-08-22T04:38:20Z

There are more and more requirements of building SoC specific drivers as modules, add support for building i.MX common clock driver as module to meet the requirement. Signed-off-by: Anson Huang Reviewed-by: Stephen Boyd Signed-off-by: Shawn Guo

clk: imx: gate2: Allow single bit gating clock

2020-04-29T02:00:05Z

Audiomix on i.MX8MP registers two gates that share the same enable count but use the same bit to control the gate instead of two bits. By adding the flag IMX_CLK_GATE2_SINGLE_BIT we allow the gate2 to use the generic gate ops for enable, disable and is_enabled. For the disable_unused, nothing happens if this flag is specified. Signed-off-by: Abel Vesa Reviewed-by: Stephen Boyd Signed-off-by: Shawn Guo

clk: imx: clk-gate2: Pass the device to the register function

2020-03-16T01:38:30Z

The device needs to be passed on to the clk_hw_register. Fixes: 1f9aec9662566189 ("clk: imx: clk-gate2: Switch to clk_hw based API") Signed-off-by: Abel Vesa Reviewed-by: Stephen Boyd Signed-off-by: Shawn Guo