Hi Vladimir, On Saturday 03 Dec 2016 23:10:35 Vladimir Zapolskiy wrote: > On 12/03/2016 07:16 PM, Laurent Pinchart wrote: > > On Friday 25 Nov 2016 13:29:37 Fabio Estevam wrote: > >> On Fri, Nov 25, 2016 at 1:22 PM, Laurent Pinchart wrote: > >>>> I got the clock name from I.MX6Q TRM, I also checked the name again > >>>> with Rockchip IC design team now, hope to get some new information > >>>> soon. > >>> > >>> Thank you. While at it, could you ask them which version of the DW HDMI > >>> IP used in the SoC ? > >> > >> DW HDMI IP used in Rockchip is: > >> dwhdmi-rockchip ff980000.hdmi: Detected HDMI controller > >> 0x20:0xa:0xa0:0xc1 > >> > >> as shown at > >> https://storage.kernelci.org/mainline/v4.9-rc6-157-g16ae16c6e561/ > >> arm-multi_v7_defconfig/lab-collabora/boot-rk3288-rock2-square_rootfs: > >> nfs.html > >> > >> DW HDMI IP used on mx6q is: > >> dwhdmi-imx 120000.hdmi: Detected HDMI controller 0x13:0xa:0xa0:0xc1 > > > > Would you be able to print the value of the CONFIG[0-3]_ID registers as > > well ? I'm also interested in the same information for RK3288, as well as > > for IMX6DL. > i.MX6Q i.MX6DL > DESIGN_ID 0x13 0x13 > REVISION_ID 0x0a 0x1a <--- the only difference > PRODUCT_ID0 0xa0 0xa0 > PRODUCT_ID1 0xc1 0xc1 > CONFIG0_ID 0x8f 0x8f > CONFIG1_ID 0x01 0x01 > CONFIG2_ID 0xf2 0xf2 <--- HDMI 3D TX PHY > CONFIG3_ID 0x02 0x02 > > I'm not sure, if i.MX6D and MX6S have the same DW HDMI IP as on i.MX6Q > and i.MXDL respectively, and I don't have i.MX6DP or i.MX6QP powered board > on hand to dump the registers. Thank you for the information. Here are the HDMI TX versions I've found so far. Allwinner H3/A64/A80 1.32a Freescale i.MX6Q 1.30a Freescale i.MX6DL 1.31a Renesas R-Car H3 2.01a Rockchip RK3288 2.00a It would be useful to know what the other Freescale i.MX6 SoCs contain and whether they're subject to the HDMI errata worked around by the dw_hdmi_clear_overflow() function (ERR004308 "HDMI: 8000504668 — The arithmetic unit may get wrong video timing values although the FC_* registers hold correct values"). However, unless I'm mistaken only i.MX6DL and i.MX6Q have upstream support for HDMI output, so it might be difficult to find this out at the moment. If we could establish that the problem isn't specific to Freescale but affects all 1.30a and 1.31a revisions, we could enable the workaround dynamically based on runtime identification. I've tested R-Car H3 without the workaround and haven't noticed the problem explained by Russell (magenta line on the left side of the image) or any other issue. Could someone test this on Rockchip RK3288 ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
