Revert "Documentation: ABI: add sysfs interface for ZynqMP CSU registers"

This reverts commit 8ebebccf1579f6ce92bde3ddbb13df12c080f647, which was
merged by accident.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
index ac8c2314deee26b412394fb13d11c3722d6676f9..c3fec3c835af362061d0211e4e31b9abd7e096bc 100644 (file)
--- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
+++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
@@ -254,36 +254,3 @@ Description:
                The expected result is 500.
 
 Users:         Xilinx
-
-What:          /sys/devices/platform/firmware\:zynqmp-firmware/csu_registers/*
-Date:          May 2026
-KernelVersion: 7.2
-Contact:       "Ronak Jain" <ronak.jain@amd.com>
-Description:
-               Read/Write CSU (Configuration Security Unit) registers.
-
-               This interface provides dynamic access to CSU registers that are
-               discovered from the firmware at boot time using PM_QUERY_DATA API.
-
-               The supported registers are:
-
-               - multiboot: CSU_MULTI_BOOT register
-               - idcode: CSU_IDCODE register (read-only)
-               - pcap-status: CSU_PCAP_STATUS register (read-only)
-
-               Read operations use the existing IOCTL_READ_REG API.
-               Write operations use the existing IOCTL_MASK_WRITE_REG API.
-
-               The firmware enforces access control - read-only registers will reject
-               write attempts even though the sysfs permissions show write access.
-
-               Usage for reading::
-
-                   # cat /sys/devices/platform/firmware\:zynqmp-firmware/csu_registers/multiboot
-                   # cat /sys/devices/platform/firmware\:zynqmp-firmware/csu_registers/idcode
-
-               Usage for writing (mask and value are in hexadecimal)::
-
-                   # echo 0xFFFFFFF 0x0 > /sys/devices/platform/firmware\:zynqmp-firmware/csu_registers/multiboot
-
-Users:         Xilinx/AMD