Commit 2bd8f670 authored Nov 27, 2019 by Jilai Wang

msm: npu: Trigger IPC interrupt twice to avoid missing interrupt



Firmware may miss IPC interrupt right after being brought up.
In order to avoid this issue, trigger IPC interrupt twice.

Change-Id: I4ad14ff44b63848c0e38586fd59dfa611e83ebfe
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>

parent 6ac75377

drivers/media/platform/msm/npu/npu_hw_access.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -196,6 +196,9 @@ int32_t npu_interrupt_raise_m0(struct npu_device *npu_dev)
		{
		npu_apss_shared_reg_write(npu_dev, APSS_SHARED_IPC_INTERRUPT_1, 0x40);

		/* write register twice to avoid missing irq */
		npu_apss_shared_reg_write(npu_dev, APSS_SHARED_IPC_INTERRUPT_1, 0x40);

		return 0;
		}