[PATCH 0/4] amlogic: t7: give the MMC bus pipeline clock real consumers

[Lucas Tanure <tanure@linux.com>]

The previous series [2] for the intermittent boot hangs on the VIM4
marked sys_ampipe_nand as critical. But as Chuan Liu from Amlogic
explained [1], sys_ampipe_nand clocks a pipeline stage that the
hardware design inserts in the bus path between the SD/eMMC
controllers and the NIC_MATRIX fabric to help timing closure.

So the clock has real consumers: reference it from the three MMC
controller nodes and drop CLK_IS_CRITICAL instead.

The series crosses three trees; patch 4 (clk) must only land after
patches 1-3, otherwise the DMA hangs fixed by 43e1705ecab9 come back.

[1] https://lore.kernel.org/linux-amlogic/ (RFC: clk: meson: t7:
    Intermittent boot instability and memory corruption on VIM4)
[2] https://lore.kernel.org/linux-amlogic/ (arm64: amlogic: t7:
    describe the VIM4 supplies and keep the fabric clocks running)

Thanks,
Lucas

Lucas Tanure (4):
  dt-bindings: mmc: amlogic,meson-gx-mmc: document the T7 pipeline clock
  mmc: meson-gx: enable the bus pipeline clock on T7
  arm64: dts: amlogic: t7: add the pipeline clock to the MMC controllers
  clk: meson: t7: don't mark sys_ampipe_nand as critical

 .../bindings/mmc/amlogic,meson-gx-mmc.yaml    | 29 ++++++++++++++++++-
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi   | 15 ++++++----
 drivers/clk/meson/t7-peripherals.c            | 10 +++----
 drivers/mmc/host/meson-gx-mmc.c               | 21 ++++++++++++++
 4 files changed, 63 insertions(+), 12 deletions(-)

-- 
2.55.0


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