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author | Frank Oltmanns <frank@oltmanns.dev> | 2024-03-10 14:21:12 +0100 |
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committer | Jernej Skrabec <jernej.skrabec@gmail.com> | 2024-04-15 23:21:56 +0200 |
commit | 69f16d9b789821183d342719d2ebd4a5ac7178bc (patch) | |
tree | 027a182563451610b0cec5f15d6d700cbf1962de /tools/perf/scripts/python/mem-phys-addr.py | |
parent | b914ec33b391ec766545a41f0cfc0de3e0b388d7 (diff) |
clk: sunxi-ng: a64: Set minimum and maximum rate for PLL-MIPI
When the Allwinner A64's TCON0 searches the ideal rate for the connected
panel, it may happen that it requests a rate from its parent PLL-MIPI
which PLL-MIPI does not support.
This happens for example on the Olimex TERES-I laptop where TCON0
requests PLL-MIPI to change to a rate of several GHz which causes the
panel to stay blank. It also happens on the pinephone where a rate of
less than 500 MHz is requested which causes instabilities on some
phones.
Set the minimum and maximum rate of Allwinner A64's PLL-MIPI according
to the Allwinner User Manual.
Fixes: ca1170b69968 ("clk: sunxi-ng: a64: force select PLL_MIPI in TCON0 mux")
Reported-by: Diego Roversi <diegor@tiscali.it>
Closes: https://groups.google.com/g/linux-sunxi/c/Rh-Uqqa66bw
Tested-by: Diego Roversi <diegor@tiscali.it>
Cc: stable@vger.kernel.org
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Frank Oltmanns <frank@oltmanns.dev>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20240310-pinephone-pll-fixes-v4-2-46fc80c83637@oltmanns.dev
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions