[PATCH v2 7/8] reset: imx8mp-audiomix: Add support for DSP run/stall

Daniel Baluta
2025-02-19T19:21:38Z

We can Run/Stall the DSP via audio block control bits found in audiomix.
Implement this functionality using the reset controller and use assert
for Stall and deassert for Run.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
drivers/reset/reset-imx8mp-audiomix.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c
index 42539cafbccc..4a713b772429 100644
--- a/drivers/reset/reset-imx8mp-audiomix.c
+++ b/drivers/reset/reset-imx8mp-audiomix.c
@@ -16,6 +16,9 @@
#define IMX8MP_AUDIOMIX_EARC_RESET_MASK BIT(1)
#define IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK BIT(2)

+#define IMX8MP_AUDIOMIX_DSP_OFFSET 0x108
+#define IMX8MP_AUDIOMIX_DSP_RUNSTALL_MASK BIT(5)
+
struct imx8mp_reset_map {
unsigned int offset;
unsigned int mask;
@@ -33,6 +36,11 @@ static const struct imx8mp_reset_map reset_map[] = {
.mask = IMX8MP_AUDIOMIX_EARC_PHY_RESET_MASK,
.active_low = true,
},
+ [IMX8MP_AUDIOMIX_DSP] = {
+ .offset = IMX8MP_AUDIOMIX_DSP_OFFSET,
+ .mask = IMX8MP_AUDIOMIX_DSP_RUNSTALL_MASK,
+ .active_low = false,
+ },
};

struct imx8mp_audiomix_reset {
--
2.25.1