Merge tag 'u-boot-imx-20200825' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx

[platform/kernel/u-boot.git] / drivers / mailbox / zynqmp-ipi.c

diff --git a/drivers/mailbox/zynqmp-ipi.c b/drivers/mailbox/zynqmp-ipi.c
index f206a27..746377e 100644 (file)
--- a/drivers/mailbox/zynqmp-ipi.c
+++ b/drivers/mailbox/zynqmp-ipi.c
@@ -24,10 +24,12 @@
 struct ipi_int_regs {
        u32 trig; /* 0x0  */
        u32 obs;  /* 0x4  */
-       u32 ist;  /* 0x8  */
-       u32 imr;  /* 0xC  */
-       u32 ier;  /* 0x10 */
-       u32 idr;  /* 0x14 */
+       u32 dummy0;
+       u32 dummy1;
+       u32 isr;  /* 0x10  */
+       u32 imr;  /* 0x14  */
+       u32 ier;  /* 0x18 */
+       u32 idr;  /* 0x1C */
 };
 
 #define ipi_int_apu ((struct ipi_int_regs *)IPI_INT_REG_BASE_APU)
@@ -66,6 +68,10 @@ static int zynqmp_ipi_recv(struct mbox_chan *chan, void *data)
        struct zynqmp_ipi *zynqmp = dev_get_priv(chan->dev);
        u32 *mbx = (u32 *)zynqmp->local_res_regs;
 
+       /*
+        * PMU Firmware does not trigger IPI interrupt for API call responses so
+        * there is no need to check ISR flags
+        */
        for (size_t i = 0; i < msg->len; i++)
                msg->buf[i] = readl(&mbx[i]);