From: Neil Armstrong <neil.armstrong@linaro.org>
To: azkali.limited@gmail.com, "Guido Günther" <agx@sigxcpu.org>,
"Purism Kernel Team" <kernel@puri.sm>,
"Ondrej Jirman" <megi@xff.cz>,
"Jessica Zhang" <jesszhan0024@gmail.com>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] drm/panel: st7703: Add AYANEO Pocket DS Lower Panel Support
Date: Mon, 27 Jul 2026 10:04:17 +0200 [thread overview]
Message-ID: <6839921c-bfbe-4733-b61d-53c454de958f@linaro.org> (raw)
In-Reply-To: <20260723-b4-st7703-pocketds-lower-v1-2-e3db246589f4@gmail.com>
On 7/23/26 13:26, Alexandre Hamamdjian via B4 Relay wrote:
> From: Alexandre Hamamdjian <azkali.limited@gmail.com>
>
> Add support for the lower (secondary) panel of the AYANEO Pocket DS, a
> dual-screen QCS8550 (Snapdragon 8 Gen 2) handheld. It is a 5.0" 1024x768
> 4:3 IPS LCD driven by a Sitronix ST7703 DDIC: every command in the vendor
> init sequence maps to an ST7703 manufacturer command (SETEXTC, SETMIPI,
> SETRGBIF, SETSCR, SETPOWER, SETGAMMA, SETGIP1/2), and the SETMIPI and
> SETRGBIF payloads are near-identical to the already-supported Powkiddy
> RGB10MAX3.
>
> The panel is mounted in portrait (768x1024) and rotated 270 degrees in
> the device, expressed through the panel rotation property. The SETEXTC
> unlock password ends in 0x87 rather than the canonical 0x83; this is the
> value shipped by the vendor firmware and is kept verbatim.
>
> Init sequence extracted from the AYANEO Pocket DS BSP kernel, via the
> ROCKNIX SM8550 port.
>
> Signed-off-by: Alexandre Hamamdjian <azkali.limited@gmail.com>
> ---
> drivers/gpu/drm/panel/panel-sitronix-st7703.c | 96 +++++++++++++++++++++++++++
> 1 file changed, 96 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> index 6c348fe28955..bfc03bdf3816 100644
> --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
> @@ -47,6 +47,7 @@
> #define ST7703_CMD_SETCABC 0xC8
> #define ST7703_CMD_SETPANEL 0xCC
> #define ST7703_CMD_SETGAMMA 0xE0
> +#define ST7703_CMD_UNKNOWN_E1 0xE1
> #define ST7703_CMD_SETEQ 0xE3
> #define ST7703_CMD_SETGIP1 0xE9
> #define ST7703_CMD_SETGIP2 0xEA
> @@ -673,6 +674,100 @@ static const struct st7703_panel_desc gameforcechi_desc = {
> .init_sequence = gameforcechi_init_sequence,
> };
>
> +static void ayaneo_pocket_ds_lower_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
> +{
> + /* Init sequence extracted from the AYANEO Pocket DS BSP kernel. */
> +
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12,
> + 0x87);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0x00, 0x01,
> + 0x78);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x10, 0x10,
> + 0x28, 0x28, 0x03, 0xff, 0x00, 0x00, 0x00,
> + 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x0a, 0x0a);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x90, 0x90);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x76,
> + 0x22, 0xf0, 0x13);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, 0x33, 0x81,
> + 0x05, 0xf9, 0x0e, 0x0e, 0x20, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,
> + 0x00, 0x91, 0x0a, 0x00, 0x00, 0x01, 0x4f,
> + 0x01, 0x00, 0x00, 0x37);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x47);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x10,
> + 0x00, 0x80, 0x04);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, 0x73, 0x73,
> + 0x50, 0x50, 0x00, 0x00, 0x12, 0x73, 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, 0x55, 0x00,
> + 0x32, 0x32, 0x77, 0xf1, 0xf7, 0xf7, 0xcc,
> + 0xcc, 0x7f, 0x7f, 0x11, 0x11, 0x00, 0x00,
> + 0x32);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETIO, 0xb8, 0x00,
> + 0x0a, 0x10, 0x01, 0x09, 0x00, 0x00, 0xed,
> + 0xc5, 0x00, 0xa5);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCABC, 0x10, 0x40,
> + 0x1e, 0x03);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0b);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, 0x00, 0x00,
> + 0x00, 0x25, 0x31, 0x3f, 0x26, 0x29, 0x04,
> + 0x08, 0x0d, 0x0e, 0x12, 0x0f, 0x11, 0x12,
> + 0x18, 0x00, 0x00, 0x00, 0x25, 0x31, 0x3f,
> + 0x26, 0x29, 0x04, 0x08, 0x0d, 0x0e, 0x12,
> + 0x0f, 0x11, 0x12, 0x18);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_E1, 0x11, 0x11,
> + 0x91, 0x00, 0x00, 0x00, 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, 0x07, 0x07,
> + 0x0b, 0x0b, 0x0b, 0x0b, 0x00, 0x00, 0x00,
> + 0x00, 0xff, 0x84, 0xc0, 0x10);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, 0xc8, 0x10,
> + 0x04, 0x04, 0x02, 0x80, 0x81, 0x12, 0x31,
> + 0x23, 0x2f, 0x80, 0x80, 0x81, 0x27, 0x20,
> + 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x0f, 0x00, 0x00, 0x00, 0x44, 0x00,
> + 0x88, 0xff, 0x00, 0x22, 0x44, 0x66, 0x88,
> + 0x88, 0x88, 0x55, 0x11, 0x88, 0xff, 0x11,
> + 0x33, 0x55, 0x77, 0x88, 0x88, 0x88, 0x00,
> + 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x11, 0x55, 0xff, 0x88,
> + 0x77, 0x55, 0x33, 0x11, 0x88, 0x88, 0x88,
> + 0x00, 0x44, 0xff, 0x88, 0x66, 0x44, 0x22,
> + 0x00, 0x88, 0x88, 0x88, 0x23, 0x00, 0x00,
> + 0x00, 0xec, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x20, 0x80, 0x81, 0x00,
> + 0x00, 0x00, 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_EF, 0xff, 0xff,
> + 0x01);
> +}
> +
> +static const struct drm_display_mode ayaneo_pocket_ds_lower_mode = {
> + .hdisplay = 768,
> + .hsync_start = 768 + 110,
> + .hsync_end = 768 + 110 + 45,
> + .htotal = 768 + 110 + 45 + 110,
> + .vdisplay = 1024,
> + .vsync_start = 1024 + 18,
> + .vsync_end = 1024 + 18 + 6,
> + .vtotal = 1024 + 18 + 6 + 16,
> + .clock = 65946,
> + .width_mm = 76,
> + .height_mm = 102,
> +};
> +
> +static const struct st7703_panel_desc ayaneo_pocket_ds_lower_desc = {
> + .mode = &ayaneo_pocket_ds_lower_mode,
> + .lanes = 4,
> + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
> + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM,
> + .format = MIPI_DSI_FMT_RGB888,
> + .init_sequence = ayaneo_pocket_ds_lower_init_sequence,
> +};
> +
> static int st7703_enable(struct drm_panel *panel)
> {
> struct st7703 *ctx = panel_to_st7703(panel);
> @@ -916,6 +1011,7 @@ static void st7703_remove(struct mipi_dsi_device *dsi)
>
> static const struct of_device_id st7703_of_match[] = {
> { .compatible = "anbernic,rg353v-panel-v2", .data = &rg353v2_desc },
> + { .compatible = "ayaneo,pocket-ds-lower-panel", .data = &ayaneo_pocket_ds_lower_desc },
> { .compatible = "gameforce,chi-panel", .data = &gameforcechi_desc },
> { .compatible = "powkiddy,rgb10max3-panel", .data = &rgb10max3_panel_desc },
> { .compatible = "powkiddy,rgb30-panel", .data = &rgb30panel_desc },
>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Thanks,
Neil
next prev parent reply other threads:[~2026-07-27 8:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-23 11:26 [PATCH 0/2] drm/panel: st7703: add AYANEO Pocket DS lower panel Alexandre Hamamdjian via B4 Relay
2026-07-23 11:26 ` [PATCH 1/2] dt-bindings: display: Add " Alexandre Hamamdjian via B4 Relay
2026-07-24 9:53 ` Krzysztof Kozlowski
2026-07-23 11:26 ` [PATCH 2/2] drm/panel: st7703: Add AYANEO Pocket DS Lower Panel Support Alexandre Hamamdjian via B4 Relay
2026-07-27 8:04 ` Neil Armstrong [this message]
2026-07-27 8:07 ` [PATCH 0/2] drm/panel: st7703: add AYANEO Pocket DS lower panel Neil Armstrong
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