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- From 713029c6a33df9218d11593bc5be79420715633f Mon Sep 17 00:00:00 2001
- From: Samuel Holland <[email protected]>
- Date: Sun, 7 Aug 2022 11:06:22 -0500
- Subject: [PATCH 097/117] drm/sun4i: dsi: Add the A100 variant
- The A100 variant of the MIPI DSI controller now gets its module clock
- from the TCON via the TCON TOP, so the clock rate cannot be set to a
- fixed value. Otherwise, it appears to be the same as the A31 variant.
- Cover-letter:
- drm/sun4i: dsi: Support the A100/D1 controller variant
- This series adds support for the digital part of the DSI controller
- found in the A100 and D1 SoCs (plus T7, which is not supported by
- mainline Linux). There are two changes to the hardware integration:
- 1) the module clock routes through the TCON TOP, and
- 2) the separate I/O domain is removed.
- The actual register interface appears to be the same as before. The
- register definitions in the D1 BSP exactly match the A64 BSP.
- The BSP describes this as the "40nm" DSI controller variant. There is
- also a "28nm" variant with a different register interface; that one is
- found in a different subset of SoCs (V5 and A50).
- A100/D1 also come with an updated DPHY, described by the BSP as a
- "combo" PHY, which is now also used for LVDS channel 0. (LVDS and DSI
- share the same pins on Port D.) Since that is a different subsystem,
- I am sending that as a separate series.
- END
- Series-to: Chen-Yu Tsai <[email protected]>
- Series-to: Jernej Skrabec <[email protected]>
- Series-to: Maxime Ripard <[email protected]>
- Series-version: 2
- Reviewed-by: Jernej Skrabec <[email protected]>
- Signed-off-by: Samuel Holland <[email protected]>
- ---
- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
- --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
- +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
- @@ -1223,6 +1223,10 @@ static const struct sun6i_dsi_variant su
- static const struct sun6i_dsi_variant sun50i_a64_mipi_dsi_variant = {
- };
-
- +static const struct sun6i_dsi_variant sun50i_a100_mipi_dsi_variant = {
- + .has_mod_clk = true,
- +};
- +
- static const struct of_device_id sun6i_dsi_of_table[] = {
- {
- .compatible = "allwinner,sun6i-a31-mipi-dsi",
- @@ -1232,6 +1236,10 @@ static const struct of_device_id sun6i_d
- .compatible = "allwinner,sun50i-a64-mipi-dsi",
- .data = &sun50i_a64_mipi_dsi_variant,
- },
- + {
- + .compatible = "allwinner,sun50i-a100-mipi-dsi",
- + .data = &sun50i_a100_mipi_dsi_variant,
- + },
- { }
- };
- MODULE_DEVICE_TABLE(of, sun6i_dsi_of_table);
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