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fix(ethos-n): add workaround for erratum 2838783

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To workaround Arm(R) Ethos(TM)-N NPU erratum 2838783, the NPU has been
configured to allow being woken up by both secure and non-secure events
to make sure that an event always wakes up the NPU.

The API version has been given a minor version bump with this change to
indicate that this fix is included.

Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
Change-Id: I429cdd6bf1e633b4dedf2e94af28937dd892a0ba
This commit is contained in:
Mikael Olsson 2023-01-11 10:36:22 +01:00 • committed by Joanna Farley
parent f309607229
commit 5a89947ab3
2 changed files with 3 additions and 2 deletions
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3
drivers/arm/ethosn/ethosn_smc.c
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@ -39,7 +39,8 @@
#define SEC_DEL_EXCC_MASK U(0x20)
#define SEC_SECCTLR_REG U(0x0010)
#define SEC_SECCTLR_VAL U(0x3)
/* Set bit[10] = 1 to workaround erratum 2838783 */
#define SEC_SECCTLR_VAL U(0x403)
#define SEC_DEL_ADDR_EXT_REG U(0x201C)
#define SEC_DEL_ADDR_EXT_VAL U(0x15)

2
include/drivers/arm/ethosn.h
View file

@ -40,7 +40,7 @@
/* Service version */
#define ETHOSN_VERSION_MAJOR U(2)
#define ETHOSN_VERSION_MINOR U(2)
#define ETHOSN_VERSION_MINOR U(3)
/* Return codes for function calls */
#define ETHOSN_SUCCESS 0