[PATCH v4 02/15] ARM: zynqmp: add sd_dll_reset call

[Steffen Trumtrar]

Add a function to reset DLL logic for SD devices.

Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
Reviewed-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 arch/arm/mach-zynqmp/firmware-zynqmp.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/mach-zynqmp/firmware-zynqmp.c b/arch/arm/mach-zynqmp/firmware-zynqmp.c
index a2b61efff4..b383ed6f00 100644
--- a/arch/arm/mach-zynqmp/firmware-zynqmp.c
+++ b/arch/arm/mach-zynqmp/firmware-zynqmp.c
@@ -511,6 +511,23 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
 				   arg1, arg2, out);
 }
 
+/**
+ * zynqmp_pm_sd_dll_reset() - Reset DLL logic
+ *
+ * @node_id:	Node ID of the device
+ * @type:	Reset type
+ *
+ * This function resets DLL logic for the SD device.
+ *
+ * Return:	Returns status, either success or error+reason
+ */
+int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
+{
+	return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SD_DLL_RESET,
+				   type, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
+
 /*
  * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
  * @index:	GGS register index

-- 
2.43.2