diff --git a/sepolicy/file.te b/sepolicy/file.te
index 47862b43..9345ce8f 100644
--- a/sepolicy/file.te
+++ b/sepolicy/file.te
@@ -9,6 +9,7 @@ type sysfs_msm_subsys_restart, sysfs_type, fs_type;
 type sysfs_net, sysfs_type, fs_type;
 type sysfs_rmtfs, sysfs_type, fs_type;
 type sysfs_soc, sysfs_type, fs_type;
+type sysfs_timestamp_switch, sysfs_type, fs_type;
 type sysfs_usb_c, sysfs_type, fs_type;
 
 type debugfs_clk, debugfs_type, fs_type;
diff --git a/sepolicy/file_contexts b/sepolicy/file_contexts
index 516bc026..8ee87542 100644
--- a/sepolicy/file_contexts
+++ b/sepolicy/file_contexts
@@ -145,6 +145,7 @@
 /sys/kernel/debug/rmt_storage(/.*)?                                 u:object_r:debugfs_rmt_storage:s0
 /sys/module/msm_thermal(/.*)?                                       u:object_r:sysfs_thermal:s0
 /sys/module/tcp_cubic/parameters(/.*)?                              u:object_r:sysfs_net:s0
+/sys/module/diagchar/parameters/timestamp_switch                    u:object_r:sysfs_timestamp_switch:s0
 /sys/devices/virtual/graphics/fb([0-2])+(/.*)?                      u:object_r:sysfs_graphics:s0
 /sys/devices/virtual/net(/.*)?                                      u:object_r:sysfs_net:s0
 /sys/devices/soc/8c0000\.qcom,msm-cam(/.*)?                         u:object_r:sysfs_camera:s0
diff --git a/sepolicy/hal_rcsservice.te b/sepolicy/hal_rcsservice.te
index 75dd4147..6452eb42 100644
--- a/sepolicy/hal_rcsservice.te
+++ b/sepolicy/hal_rcsservice.te
@@ -16,6 +16,8 @@ get_prop(hal_rcsservice, hwservicemanager_prop)
 # allow hal to read sysfs file
 r_dir_file(hal_rcsservice, sysfs_msm_subsys)
 
+allow hal_rcsservice sysfs_timestamp_switch:file r_file_perms;
+
 unix_socket_connect(hal_rcsservice, ims, ims)
 
 # imsrcsd to bind with UceShimService.apk
diff --git a/sepolicy/ims.te b/sepolicy/ims.te
index c665de05..8a82cf5b 100644
--- a/sepolicy/ims.te
+++ b/sepolicy/ims.te
@@ -10,6 +10,7 @@ unix_socket_connect(ims, netmgrd, netmgrd)
 
 allow ims sysfs_soc:dir search;
 allow ims sysfs_soc:file r_file_perms;
+allow ims sysfs_timestamp_switch:file r_file_perms;
 
 # TODO(b/38228603): Remove net_raw upon resolution of this bug
 allow ims self:capability { net_raw net_bind_service};
@@ -19,6 +20,7 @@ allow ims ion_device:chr_file r_file_perms;
 unix_socket_connect(ims, cnd, cnd)
 
 allow ims self:socket create_socket_perms;
+allow ims ims_socket:sock_file write;
 allow ims self:netlink_generic_socket create_socket_perms_no_ioctl;
 allow ims netmgrd_socket:dir search;
 allow ims netmgrd_socket:sock_file w_file_perms;