Adds afi ioctl to support dynamic PS-PL bus width settings.
Signed-off-by: Nava kishore Manne <nava.kishore.manne@xxxxxxx>
---
drivers/firmware/xilinx/zynqmp.c | 14 +++++++++++
include/linux/firmware/xlnx-zynqmp.h | 36 ++++++++++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index d1f652802181..cbd84c96a66a 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -843,6 +843,20 @@ 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
+ * @config_id: Register index value
+ * @bus_width: Afi interface bus width value.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_afi(u32 config_id, u32 bus_width)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_AFI,
+ config_id, bus_width, 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
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 9f50dacbf7d6..7d0d98303acc 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -78,6 +78,16 @@
#define EVENT_ERROR_PSM_ERR1 (0x28108000U)
#define EVENT_ERROR_PSM_ERR2 (0x2810C000U)
+#define AFIFM_BUS_WIDTH_128_CONFIG_VAL 0x0U
+#define AFIFM_BUS_WIDTH_64_CONFIG_VAL 0x1U
+#define AFIFM_BUS_WIDTH_32_CONFIG_VAL 0x2U
+
+#define AFIFS_SS0_SS2_BUS_WIDTH_128_CONFIG_VAL 0x200U
+#define AFIFS_SS0_SS2_BUS_WIDTH_64_CONFIG_VAL 0x100U
+#define AFIFS_SS1_BUS_WIDTH_128_CONFIG_VAL 0x800U
+#define AFIFS_SS1_BUS_WIDTH_64_CONFIG_VAL 0x400U
+#define AFIFS_SS_BUS_WIDTH_32_CONFIG_VAL 0x0U
+
enum pm_api_cb_id {
PM_INIT_SUSPEND_CB = 30,
PM_ACKNOWLEDGE_CB = 31,
@@ -147,6 +157,7 @@ enum pm_ioctl_id {
IOCTL_READ_PGGS = 15,
/* Set healthy bit value */
IOCTL_SET_BOOT_HEALTH_STATUS = 17,
+ IOCTL_AFI = 18,
IOCTL_OSPI_MUX_SELECT = 21,
/* Register SGI to ATF */
IOCTL_REGISTER_SGI = 25,
@@ -155,6 +166,25 @@ enum pm_ioctl_id {
IOCTL_GET_FEATURE_CONFIG = 27,
};
+enum pm_afi_config_id {
+ AFIFM0_RDCTRL = 0,
+ AFIFM0_WRCTRL = 1,
+ AFIFM1_RDCTRL = 2,
+ AFIFM1_WRCTRL = 3,
+ AFIFM2_RDCTRL = 4,
+ AFIFM2_WRCTRL = 5,
+ AFIFM3_RDCTRL = 6,
+ AFIFM3_WRCTRL = 7,
+ AFIFM4_RDCTRL = 8,
+ AFIFM4_WRCTRL = 9,
+ AFIFM5_RDCTRL = 10,
+ AFIFM5_WRCTRL = 11,
+ AFIFM6_RDCTRL = 12,
+ AFIFM6_WRCTRL = 13,
+ AFIFS = 14,
+ AFIFS_SS2 = 15,
+};
+
enum pm_query_id {
PM_QID_INVALID = 0,
PM_QID_CLOCK_GET_NAME = 1,
@@ -475,6 +505,7 @@ int zynqmp_pm_is_function_supported(const u32 api_id, const u32 id);
int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value);
int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload);
int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset);
+int zynqmp_pm_afi(u32 config_id, u32 bus_width);
#else
static inline int zynqmp_pm_get_api_version(u32 *version)
{
@@ -745,6 +776,11 @@ static inline int zynqmp_pm_register_sgi(u32 sgi_num, u32 reset)
{
return -ENODEV;
}
+
+static inline int zynqmp_pm_afi(u32 config_id, u32 bus_width)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
--
2.25.1
