Dne petek, 08. april 2022 ob 12:32:25 CEST je Sandor Yu napisal(a):
i.MX8MPlus (v2.13a) has verified need the workaround to clear the overflow with one iteration. Only i.MX6Q(v1.30a) need the workaround with 4 iterations, the others versions later than v1.3a have been identified as needing the workaround with a single iteration.
Default enable the workaround with one iteration for all versions later than v1.30a.
Signed-off-by: Sandor Yu Sandor.yu@nxp.com
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 4befc104d220..02d8f7e08814 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2086,30 +2086,21 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) * then write one of the FC registers several times. * * The number of iterations matters and depends on the HDMI TX
revision
* (and possibly on the platform). So far i.MX6Q (v1.30a), i.MX6DL* (v1.31a) and multiple Allwinner SoCs (v1.32a) have been
identified
* as needing the workaround, with 4 iterations for v1.30a and 1* iteration for others.* The Amlogic Meson GX SoCs (v2.01a) have been identified as
needing
* the workaround with a single iteration.* The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs
(v2.11a) have
* been identified as needing the workaround with a single
iteration.
* (and possibly on the platform).* 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others.* i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC(v2.00a), + * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a)
* and i.MX8MPlus (v2.13a) have been identified as needing the
workaround
* with a single iteration.
It would be easier to read and modify later if platforms/controllers/variants are given as list, one per line, but it could be done later.
Best regards, Jernej
switch (hdmi->version) { case 0x130a: count = 4; break;
- case 0x131a:
- case 0x132a:
- case 0x200a:
- case 0x201a:
- case 0x211a:
- case 0x212a:
- default: count = 1; break;
default:
return;}
/* TMDS software reset */