@@ -713,6 +713,19 @@ int zynqmp_pm_read_pggs(u32 index, u32 *value)
}
EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
+/**
+ * zynqmp_pm_afi() - PM API for setting the PS-PL bus width
+ * @index: Register index value
+ * @value: value to be written into the register
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_afi(u32 index, u32 value)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_AFI, index, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_afi);
+
/**
* zynqmp_pm_set_boot_health_status() - PM API for setting healthy boot status
* @value: Status value to be written
@@ -113,6 +113,7 @@ enum pm_ioctl_id {
IOCTL_READ_PGGS = 15,
/* Set healthy bit value */
IOCTL_SET_BOOT_HEALTH_STATUS = 17,
+ IOCTL_AFI = 18,
};
enum pm_query_id {
@@ -353,6 +354,7 @@ int zynqmp_pm_write_pggs(u32 index, u32 value);
int zynqmp_pm_read_pggs(u32 index, u32 *value);
int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype);
int zynqmp_pm_set_boot_health_status(u32 value);
+int zynqmp_pm_afi(u32 index, u32 value);
#else
static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
{
@@ -537,6 +539,11 @@ static inline int zynqmp_pm_set_boot_health_status(u32 value)
{
return -ENODEV;
}
+
+static inline int zynqmp_pm_afi(u32 index, u32 value)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
This patch adds afi ioctl to support dynamic PS-PL bus width settings. Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> --- drivers/firmware/xilinx/zynqmp.c | 13 +++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 7 +++++++ 2 files changed, 20 insertions(+)