kernel/git/stable/linux.git/drivers/clk/imx/clk-composite-7ulp.c, branch master

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

clk: imx: Add some delay before deassert the reset

2025-11-11T15:02:01+00:00

Some of the PCCs on i.MX8ULP have a sw_rst bit to control the peripheral reset through SW method. For peripherals like GPU that need sync reset, some delay is necessary befere & after release the reset to make sure the HW is reset into a known status. So add some delay before & after release reset. Signed-off-by: Jacky Bai Reviewed-by: Peng Fan Link: https://lore.kernel.org/r/20250801072153.1974428-1-ping.bai@nxp.com Signed-off-by: Abel Vesa

clk: imx: composite-7ulp: Use NULL instead of 0

2024-06-24T11:22:08+00:00

Address the sparse warnings " sparse warnings: (new ones prefixed by >>) >> drivers/clk/imx/clk-composite-7ulp.c:85:24: sparse: sparse: Using plain integer as NULL pointer " Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202406220536.JnAncjqz-lkp@intel.com/ Signed-off-by: Peng Fan Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20240624024351.488492-1-peng.fan@oss.nxp.com Signed-off-by: Abel Vesa

clk: imx: composite-7ulp: Check the PCC present bit

2024-06-21T06:35:21+00:00

When some module is disabled by fuse, its PCC PR bit is default 0 and PCC is not operational. Any write to this PCC will cause SError. Fixes: b40ba8065347 ("clk: imx: Update the compsite driver to support imx8ulp") Reviewed-by: Peng Fan Signed-off-by: Ye Li Signed-off-by: Peng Fan Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20240607133347.3291040-4-peng.fan@oss.nxp.com Signed-off-by: Abel Vesa

clk: imx: Remove values for mmask and nmask in struct clk_fractional_divider

2023-04-05T19:09:27+00:00

Now that fractional_divider clk computes mmask and nmask when needed, there is no more need to provide them explicitly anymore. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/187a2266c3a034a593a151d6e5e6b21118043b5d.1680423909.git.christophe.jaillet@wanadoo.fr Reviewed-by: Abel Vesa Signed-off-by: Stephen Boyd

clk: imx: Fix the build break when clk-imx8ulp build as module

2021-10-01T07:15:42+00:00

Export the necessary symbols to fix the build break when clk-imx8ulp build as module Fixes: c43a801a5789 ("clk: imx: Add clock driver for imx8ulp") Signed-off-by: Jacky Bai Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20210917061629.3798360-1-ping.bai@nxp.com Signed-off-by: Abel Vesa

clk: imx: Add the pcc reset controller support on imx8ulp

2021-09-30T13:22:56+00:00

On i.MX8ULP, for some of the PCCs, it has a peripheral SW RST bit resides in the same registers as the clock controller. So add this SW RST controller support alongs with the pcc clock initialization. the reset and clock shared the same register, to avoid accessing the same register by reset control and clock control concurrently, locking is necessary, so reuse the imx_ccm_lock spinlock to simplify the code. Suggested-by: Liu Ying Signed-off-by: Jacky Bai Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20210914065208.3582128-10-ping.bai@nxp.com Signed-off-by: Abel Vesa

clk: imx: Add 'CLK_SET_RATE_NO_REPARENT' for composite-7ulp

2021-09-30T13:22:55+00:00

For the imx_composite-7ulp clock type, The clock parent should be changed explicitly by end user of this clock, if the the 'CLK_SET_RATE_NO_REPARENT' flag is not set, when user want to set a clock frequency that can NOT get from HW accurately, then the clock's parent will be switch to another clock parent sometimes. This is NOT what we expected and introduced some additional debug effort, so add the 'CLK_SET_RATE_NO_REPARENT' to avoid such unexpected result. Signed-off-by: Jacky Bai Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20210914065208.3582128-6-ping.bai@nxp.com Signed-off-by: Abel Vesa

clk: imx: disable i.mx7ulp composite clock during initialization

2021-09-30T13:22:55+00:00

i.MX7ULP peripheral clock ONLY allow parent/rate to be changed with clock gated, however, during clock tree initialization, the peripheral clock could be enabled by bootloader, but the prepare count in clock tree is still zero, so clock core driver will allow parent/rate changed even with CLK_SET_RATE_GATE/CLK_SET_PARENT_GATE set, but the change will fail due to HW NOT allow parent/rate change with clock enabled. It will cause clock HW status mismatch with clock tree info and lead to function issue. Below is an example: usdhc0's pcc clock value is 0xC5000000 during kernel boot up, it means usdhc0 clock is enabled, its parent is APLL_PFD1. In DT file, the usdhc0 clock settings are as below: assigned-clocks = <&pcc2 IMX7ULP_CLK_USDHC0>; assigned-clock-parents = <&scg1 IMX7ULP_CLK_NIC1_DIV>; when kernel boot up, the clock tree info is as below, but the usdhc0 PCC register is still 0xC5000000, which means its parent is still from APLL_PFD1, which is incorrect and cause usdhc0 NOT work. nic1_clk 2 2 0 176000000 0 0 50000 usdhc0 0 0 0 176000000 0 0 50000 After making sure the peripheral clock is disabled during clock tree initialization, the usdhc0 is working, and this change is necessary for all i.MX7ULP peripheral clocks. Signed-off-by: Anson Huang Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20210914065208.3582128-5-ping.bai@nxp.com Signed-off-by: Abel Vesa