[ARM] Prevent high-speed SD, enable CONFIG_DEBUG_FS - #295
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This will prevent SD card from doing SD high-speed timing. It will not do SD high-speed timing for high-speed or standard-speed card. Signed-off-by: Chen Yee Chew <chen.yee.chew@ni.com> Reviewed-by: Keng Soon Cheah <keng.soon.cheah@ni.com> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Natinst-CAR-ID: 519438 Natinst-ReviewBoard-ID: 99036 (cherry picked from commit 1aa830c) [cvadrevu: Resolved simple conflict with 8199d31 ("mmc: sdhci-pltfm: Convert DT properties to generic device properties") by switching from of_get_property API to device_property_present] Signed-off-by: Chaitanya Vadrevu <chaitanya.vadrevu@emerson.com>
Enable debugfs to provide access to kernel debugging and diagnostic interfaces on NI Zynq targets. Signed-off-by: Chaitanya Vadrevu <chaitanya.vadrevu@emerson.com>
gratian
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Sep 10, 2026
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Cherry-pick commit "HACK sd: Prevent SD from doing high-speed timing" from 4.14 kernel.
Also enable missing CONFIG_DEBUG_FS for parity with x64 and to support tracing.
WI: AB#3990505
Testing
sbRIO-9607(device code 77D6 whose dtb hasforce-sd-standardset)./sys/kernel/debug/mmc0/capsis0x40000009i.e.,MMC_CAP_SD_HIGHSPEED(1 << 2) andMMC_CAP_MMC_HIGHSPEED(1 << 1) are not set.