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[v8,0/7] rockchip: clk: improve GATE_LINK support

Message ID 20240126182919.48402-1-sebastian.reichel@collabora.com
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Series rockchip: clk: improve GATE_LINK support | expand

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Sebastian Reichel Jan. 26, 2024, 6:18 p.m. UTC 
Hi,

This is a follow-up for Elaine's series. These patches are written from
scratch, though. There are two parts:

part 1:
Elaine's series used to contain patches for the VO1GRF handling, but they were
dropped at some point because of the CLK_NR_CLKS feedback from the DT
maintainers. I added some code, that should hopefully fix everyones concerns by
figuring out the right number at runtime. I also moved the correct handling of
pclk_vo0grf/pclk_vo1grf before proper handling of GATE_LINK clocks, so that it
can be merged ASAP. These patches are needed for HDMI RX/TX support on RK3588.

part 2:
For proper GATE_LINK support I tried implementing the suggestion from Stephen
Boyd to use clk PM operations by creating MFD dynamically. This required some
restructuring, since CLK_OF_DECLARE() is called before devices are available.
All of this can be found in the last patch of this series.

Changes since PATCHv7:
 * https://lore.kernel.org/all/20231213185114.47565-1-sebastian.reichel@collabora.com/
 * rebased to v6.8-rc1
 * Collected Reviewed-by/Acked-by from Krzysztof Kozlowski for DT binding patches
 * support nr_clk=0 in rockchip_clk_find_max_clk_id() for smatch

Greetings,

-- Sebstian

Sebastian Reichel (7):
  clk: rockchip: rk3588: fix CLK_NR_CLKS usage
  dt-bindings: clock: rk3588: drop CLK_NR_CLKS
  dt-bindings: clock: rk3588: add missing PCLK_VO1GRF
  clk: rockchip: rk3588: fix pclk_vo0grf and pclk_vo1grf
  clk: rockchip: rk3588: fix indent
  clk: rockchip: rk3588: use linked clock ID for GATE_LINK
  clk: rockchip: implement proper GATE_LINK support

 drivers/clk/rockchip/clk-rk3588.c             | 163 ++++++++----------
 drivers/clk/rockchip/clk.c                    |  86 ++++++++-
 drivers/clk/rockchip/clk.h                    |  18 ++
 .../dt-bindings/clock/rockchip,rk3588-cru.h   |   3 +-
 4 files changed, 179 insertions(+), 91 deletions(-)