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new e9bafae796c arch/arm/imxrt: finish the CAAM job ring reset
e9bafae796c is described below
commit e9bafae796cacc07e93aa3d7688396b0c81f3bf8
Author: Royyan Zahir <[email protected]>
AuthorDate: Sat Oct 3 15:02:14 2026 +0400
arch/arm/imxrt: finish the CAAM job ring reset
A JRCR reset only flushes and halts the job ring; a second reset, once
JRINT reports the halt done, completes it, as Linux's caam_reset_hw_jr()
does. With the single write the ring stayed halted, so the RNG
instantiate job never completed and every boot logged "job ring did not
answer" before the settle loop's second ring init finished the reset.
Signed-off-by: Royyan Zahir <[email protected]>
---
arch/arm/src/imxrt/hardware/rt117x/imxrt117x_caam.h | 1 +
arch/arm/src/imxrt/imxrt_caam.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/arch/arm/src/imxrt/hardware/rt117x/imxrt117x_caam.h
b/arch/arm/src/imxrt/hardware/rt117x/imxrt117x_caam.h
index f34aa85c138..4890d787bf4 100644
--- a/arch/arm/src/imxrt/hardware/rt117x/imxrt117x_caam.h
+++ b/arch/arm/src/imxrt/hardware/rt117x/imxrt117x_caam.h
@@ -115,6 +115,7 @@
#define CAAM_JRCR_RESET (1 << 0)
#define CAAM_JRINT_ERR_HALT_MASK (3 << 2)
#define CAAM_JRINT_ERR_HALT_INPROG (1 << 2)
+#define CAAM_JRINT_ERR_HALT_DONE (2 << 2)
#define CAAM_JRCFG1_IMSK (1 << 0) /* Mask the ring interrupt */
/* RTMCTL, RTSDCTL, RDSTA */
diff --git a/arch/arm/src/imxrt/imxrt_caam.c b/arch/arm/src/imxrt/imxrt_caam.c
index dba90f0fbff..ee423c36d56 100644
--- a/arch/arm/src/imxrt/imxrt_caam.c
+++ b/arch/arm/src/imxrt/imxrt_caam.c
@@ -302,6 +302,24 @@ static int imxrt_caam_ring_init(void)
putreg32(CAAM_JRCR_RESET, IMXRT_CAAM_JRCR);
+ for (timeout = CAAM_TIMEOUT; timeout > 0; timeout--)
+ {
+ if ((getreg32(IMXRT_CAAM_JRINT) & CAAM_JRINT_ERR_HALT_MASK) !=
+ CAAM_JRINT_ERR_HALT_INPROG)
+ {
+ break;
+ }
+ }
+
+ if ((getreg32(IMXRT_CAAM_JRINT) & CAAM_JRINT_ERR_HALT_MASK) !=
+ CAAM_JRINT_ERR_HALT_DONE)
+ {
+ _err("ERROR: job ring would not halt\n");
+ return -ETIMEDOUT;
+ }
+
+ putreg32(CAAM_JRCR_RESET, IMXRT_CAAM_JRCR);
+
for (timeout = CAAM_TIMEOUT; timeout > 0; timeout--)
{
if ((getreg32(IMXRT_CAAM_JRCR) & CAAM_JRCR_RESET) == 0)
