drm/msm/dsi: Add phy configuration for MSM8226

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MSM8226 uses a modified PLL lock sequence compared to MSM8974, which is
based on the function dsi_pll_enable_seq_m in the msm-3.10 kernel.

Worth noting that the msm-3.10 downstream kernel also will try other
sequences in case this one doesn't work, but during testing it has shown
that the _m sequence succeeds first time also:

  .pll_enable_seqs[0] = dsi_pll_enable_seq_m,
  .pll_enable_seqs[1] = dsi_pll_enable_seq_m,
  .pll_enable_seqs[2] = dsi_pll_enable_seq_d,
  .pll_enable_seqs[3] = dsi_pll_enable_seq_d,
  .pll_enable_seqs[4] = dsi_pll_enable_seq_f1,
  .pll_enable_seqs[5] = dsi_pll_enable_seq_c,
  .pll_enable_seqs[6] = dsi_pll_enable_seq_e,

We may need to expand this in the future.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/540618/
Link: https://lore.kernel.org/r/20230308-msm8226-mdp-v3-6-b6284145d67a@z3ntu.xyz
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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Luca Weiss 2023-06-01 19:00:13 +02:00 • committed by Dmitry Baryshkov

parent 82cf4954a0

commit 1531d0b923

3 changed files with 101 additions and 1 deletions

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2

drivers/gpu/drm/msm/dsi/phy/dsi_phy.c

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3

drivers/gpu/drm/msm/dsi/phy/dsi_phy.h

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97

drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c

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