Re: [PATCH v3 6/7] drm/msm/dsi: Add phy configuration for MSM8226

From: Dmitry Baryshkov
Date: Sat Jun 03 2023 - 22:57:01 EST


On 01/06/2023 20:00, Luca Weiss wrote:
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@xxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 2 +
drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 3 +-
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 97 ++++++++++++++++++++++++++++++
3 files changed, 101 insertions(+), 1 deletion(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

--
With best wishes
Dmitry