hikey960: EDMAC: leave channel 0 as secure

Channel 0 is used to communicate with LPM3, a coprocessor
for power management. Leave it as secure.

Signed-off-by: Ryan Grachek <[email protected]>

diff --git a/plat/hisilicon/hikey960/hikey960_bl31_setup.c b/plat/hisilicon/hikey960/hikey960_bl31_setup.c
index 67b06f498cc26a3f2da00f74459cc1bad839ed72..c3fcc38046552e24850117e6d7c8967a1ca4cd96 100644 (file)
--- a/plat/hisilicon/hikey960/hikey960_bl31_setup.c
+++ b/plat/hisilicon/hikey960/hikey960_bl31_setup.c
@@ -154,7 +154,8 @@ static void hikey960_edma_init(void)
        non_secure = EDMAC_SEC_CTRL_INTR_SEC | EDMAC_SEC_CTRL_GLOBAL_SEC;
        mmio_write_32(EDMAC_SEC_CTRL, non_secure);
 
-       for (i = 0; i < EDMAC_CHANNEL_NUMS; i++) {
+       /* Channel 0 is reserved for LPM3, keep secure */
+       for (i = 1; i < EDMAC_CHANNEL_NUMS; i++) {
                mmio_write_32(EDMAC_AXI_CONF(i), (1 << 6) | (1 << 18));
        }
 }