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kboot: dcpext: Enable dcpext* on t600x only with firmware 13.5

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Only the HDMI port on 14 and 16 inch Macbook Pros needs dcpext and the
dptxport endpoint implemention in the DCP driver supports only the 13.5
firmware. Postpone this for after the fedora release.

Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2023-11-06 18:51:21 +01:00 committed by Hector Martin
parent c9ae791b79
commit 4ce65e1c08
1 changed files with 8 additions and 6 deletions
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14
src/kboot.c
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@ -1794,13 +1794,15 @@ static int dt_set_display(void)
if (ret)
return ret;
for (int n = 0; n < MAX_DCPEXT && ret == 0; n++) {
char dcpext_alias[16];
if (os_firmware.version >= V13_5) {
for (int n = 0; n < MAX_DCPEXT && ret == 0; n++) {
char dcpext_alias[16];
snprintf(dcpext_alias, sizeof(dcpext_alias), "dcpext%d", n);
ret = dt_carveout_reserved_regions(dcpext_alias, NULL, NULL,
dcpext_reserved_regions_t600x[n],
ARRAY_SIZE(dcpext_reserved_regions_t600x[n]));
snprintf(dcpext_alias, sizeof(dcpext_alias), "dcpext%d", n);
ret = dt_carveout_reserved_regions(dcpext_alias, NULL, NULL,
dcpext_reserved_regions_t600x[n],
ARRAY_SIZE(dcpext_reserved_regions_t600x[n]));
}
}
} else if (!fdt_node_check_compatible(dt, 0, "apple,t6020") ||
!fdt_node_check_compatible(dt, 0, "apple,t6021")) {