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micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="e6zrp2dlq4xzmy2v" Content-Disposition: inline In-Reply-To: <5573124.44csPzL39Z@diego> X-Zoho-Virus-Status: 1 X-Zoho-AV-Stamp: zmail-av-0.2.13.1.5.4/294.236.36 X-ZohoMailClient: External --e6zrp2dlq4xzmy2v Content-Type: text/plain; protected-headers=v1; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH 4/5] arm64: dts: rockchip: Add DSI panel to RK3588 EVB1 MIME-Version: 1.0 Hi, On Mon, Nov 09, 2026 at 02:26:44PM +0100, Heiko St=FCbner wrote: > Am Montag, 9. November 2026, 02:31:35 Mitteleurop=E4ische Normalzeit schr= ieb Chaoyi Chen: > > Hi Sebastian, > > On 11/9/2026 3:42 AM, Sebastian Reichel wrote: > > > Hello Chaoyi, > > >=20 > > > On Sun, Nov 08, 2026 at 11:15:09AM +0800, Chaoyi Chen wrote: > > >> Hi Sebastian, > > >> > > >> On 11/7/2026 5:57 AM, Sebastian Reichel wrote: > > >>> The RK3588 EVB1 comes with a W552793DBA-V10 Touchscreen/Display > > >>> combination. It contains a Wanchanglong W552793BAA panel and a > > >>> Goodix GT1158 touchscreen. This adds the DT description of it. > > >>> Signed-off-by: Sebastian Reichel > > >>> --- > > >>> arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts | 90 ++++++++++++= ++++++++++++ > > >>> 1 file changed, 90 insertions(+) > > >>> > > >>> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts b/arc= h/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts > > >>> index 6a95a8bb6fb8..327ca13b60f0 100644 > > >>> --- a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts > > >>> +++ b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts > > >>> @@ -204,6 +204,15 @@ vcc12v_dcin: regulator-vcc12v-dcin { > > >>> regulator-max-microvolt =3D <12000000>; > > >>> }; > > >>> =20 > > >> > > >> I seem unable to apply the patch to the latest linux-next tree. > > >> > > >> So I tried to resolve the conflict manually, but the actual > > >> test screen did not display. I will look into this further. > > >=20 > > > Strange. The base of this series was Heiko's for-next tree from > > > Friday. No RK3588 EVB1 patches landed since then: > > >=20 > > > https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.= git/commit/?h=3Dfor-next&id=3Dcabb6811c38a46337d5f4252b4dc390f9296856c > > >=20 > > > If your board uses the original Rockchip bootloader, which shows a > > > Rockchip logo on the panel, you also need Cristian's latest YUV420 > > > patches that reset VOP2 at probe time avoiding some issues with the > > > pre-initialized panel as a side effect. Those were recently applied > > > by Heiko to the DRM tree, so testing on linux-next is indeed > > > sensible. > > >=20 > >=20 > > Hmm, the newest linux-next tag which I used is next-20261105, and Heiko= 's=20 > > tree last updated date is1106. I'll give it a try on Heiko's tree. > >=20 > > And I'm using mainline U-Boot, which obtained from the latest nightly b= uild: > > https://gitlab.collabora.com/hardware-enablement/rockchip-3588/debian-i= mage-recipes. > >=20 > > The backlight working correctly, and the DCS command has been sent, but= nothing display. > > Perhaps I should look elsewhere. >=20 > I would assume it could be the SPLL (again). >=20 > I.e. a recent u-boot change broke the SPL-based forced clock init and Jon= as > fixed that in [0]. Had the black display again recently too. >=20 > And it seems it hasn't been merged yet. Sounds reasonable. FWIW I only tested with the pre-flashed Rockchip U-Boot (as described above). I intentionally keep that on my RK3588 EVB1, so that I can test RK3588 with vendor TF-A/U-Boot and upstream or downstream kernel. All my other boards run upstream TF-A/U-Boot. 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