[PATCH 0/2] clk: thead: th1520-ap: allow gate cascade and fix padctrl0

[Icenowy Zheng]

Current ccu_gate implementation does not easily allow gates to be clock
parents because of the waste of struct clk_hw in struct ccu_gate;
however it's found that the padctrl0 apb clock gate seems to be
downstream of perisys-apb4-hclk, gating the latter w/o gating the former
makes the padctrl0 registers inaccessible too.

Fix this by refactor ccu_gate code, mimicing what Yao Zi did on
ccu_mux; and then assign perisys-apb4-hclk as parent of padctrl0 bus
gate.

This patchset depends on the display clock patchset at [1], although a
rebasing to get rid of this dependency is possible.

[1] https://lore.kernel.org/linux-riscv/20250813072702.2176993-1-uwu@icenowy.me/

Icenowy Zheng (2):
  clk: thead: th1520-ap: describe gate clocks with clk_gate
  clk: thead: th1520-ap: fix parent of padctrl0 clock

 drivers/clk/thead/clk-th1520-ap.c | 385 +++++++++++++++---------------
 1 file changed, 188 insertions(+), 197 deletions(-)

-- 
2.50.1