kernel/linux.git/drivers/clk/spacemit, branch v7.0.10

clk: spacemit: ccu_mix: fix inverted condition in ccu_mix_trigger_fc()

2026-05-23T11:09:15+00:00

[ Upstream commit 54e97360b44bed6b4399dd3be3d65f392df940fa ] Fix inverted condition that skips frequency change trigger, causing kernel panics during cpufreq scaling. Fixes: 1b72c59db0ad ("clk: spacemit: Add clock support for SpacemiT K1 SoC") Signed-off-by: Shuwei Wu Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260305-k1-clk-fix-v1-1-abca85d6e266@mailbox.org Signed-off-by: Yixun Lan Signed-off-by: Sasha Levin

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: spacemit: k3: add the clock tree

2026-01-09T02:48:17+00:00

Add clock support to SpacemiT K3 SoC, the clock tree consist of several blocks which are APBC, APBS, APMU, DCIU, MPUM. Link: https://lore.kernel.org/r/20260108-k3-clk-v5-5-42a11b74ad58@gentoo.org Signed-off-by: Yixun Lan

clk: spacemit: ccu_pll: add plla type clock

2026-01-09T02:29:10+00:00

Introduce a new clock PLLA for SpacemiT's K3 SoC which has a different register layout comparing to previous PPL type. And, It is configured by swcr1, swcr3 and swcr2 BIT[15:8]. Link: https://lore.kernel.org/r/20260108-k3-clk-v5-3-42a11b74ad58@gentoo.org Signed-off-by: Yixun Lan

clk: spacemit: ccu_mix: add inverted enable gate clock

2026-01-09T02:27:53+00:00

K3 SoC has the clock IP which support to write value 0 for enabling the clock, while write 1 for disabling it, thus the enable BIT is inverted. So, introduce a flag to support the inverted gate clock. Link: https://lore.kernel.org/r/20260108-k3-clk-v5-2-42a11b74ad58@gentoo.org Signed-off-by: Yixun Lan

clk: spacemit: add platform SoC prefix to reset name

2026-01-09T02:00:52+00:00

This change is needed for adding future new SpacemiT K3 reset driver. Since both K1 and K3 reset code register via the same module which its name changed to spacemit_ccu, it's necessary to encode the platform/SoC in the reset auxiliary device name to distinguish them, otherwise two reset drivers will claim to support same "compatible" auxiliary device even in the case of only one CCU clock driver got registered, which in the end lead to a broken reset driver. This change will introduce a runtime break to reset driver, and will be fixed in follow-up commit: ecff77f7c041 ("reset: spacemit: fix auxiliary device id") Link: https://lore.kernel.org/r/20260108-06-k1-clk-common-v4-3-badf635993d3@gentoo.org Reviewed-by: Alex Elder Signed-off-by: Yixun Lan

clk: spacemit: extract common ccu functions

2026-01-09T02:00:37+00:00

Refactor the probe function of SpacemiT's clock, and extract a common ccu file, so new clock driver added in the future can share the same code, which would lower the burden of maintenance. Since this commit changes the module name from spacemit_ccu_k1 to spacemit_ccu where the auxiliary device registered, the auxiliary device id need to be adjusted. Idea of the patch comes from the review of K3 clock driver, please refer to this disucssion[1] for more detail. This change will introduce a runtime break to reset driver, and will be fixed in follow-up commit: ecff77f7c041 ("reset: spacemit: fix auxiliary device id") Link: https://lore.kernel.org/all/aTo8sCPpVM1o9PKX@pie/ [1] Link: https://lore.kernel.org/r/20260108-06-k1-clk-common-v4-2-badf635993d3@gentoo.org Suggested-by: Yao Zi Reviewed-by: Alex Elder Signed-off-by: Yixun Lan

clk: spacemit: Hide common clock driver from user controller

2025-12-23T02:28:31+00:00

Since the common clock driver is only a dependency for other spacemit clock driver, it should not be enabled individually, so hide this in the Kconfig UI and let other spacemit clock driver select it. Signed-off-by: Inochi Amaoto Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251219012819.440972-3-inochiama@gmail.com Signed-off-by: Yixun Lan

clk: spacemit: Respect Kconfig setting when building modules

2025-12-23T02:28:28+00:00

Currently, the SPACEMIT_CCU entry is only a switch for enabling entry SPACEMIT_K1_CCU. It does not guide the build for common clock codes even if it is a tristate entry. This makes this entry useless. Change the Makefile to add a separate build for common clock logic, so the SPACEMIT_CCU entry takes effect, also add necessary MODULE_LICENSE()/MODULE_DESCRIPTION()/EXPORT_SYMBOL() for the module build. Fixes: 1b72c59db0ad ("clk: spacemit: Add clock support for SpacemiT K1 SoC") Signed-off-by: Inochi Amaoto Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251219012819.440972-2-inochiama@gmail.com Signed-off-by: Yixun Lan