Since commit d877f8fd0f09 ("arm: provide a function for boards init code to
modify MMU virtual-physical map"), the mmu_set_region_dcache_behaviour_phys
parameters need to be aligned on MMU_SECTION_SIZE to avoid unpredictable
behavior (alignment was done previously done in the function
mmu_set_region_dcache_behaviour_phys).CC: Etienne Carriere <[email protected]> Fixes: 240720e9052f ("firmware: scmi: mailbox/smt agent device") Signed-off-by: Patrick Delaunay <[email protected]> --- drivers/firmware/scmi/smt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/firmware/scmi/smt.c b/drivers/firmware/scmi/smt.c index d25478796a..b88e228dc8 100644 --- a/drivers/firmware/scmi/smt.c +++ b/drivers/firmware/scmi/smt.c @@ -53,9 +53,12 @@ int scmi_dt_get_smt_buffer(struct udevice *dev, struct scmi_smt *smt) return -ENOMEM; #ifdef CONFIG_ARM - if (dcache_status()) - mmu_set_region_dcache_behaviour((uintptr_t)smt->buf, - smt->size, DCACHE_OFF); + if (dcache_status()) { + uintptr_t start = ALIGN_DOWN((uintptr_t)smt->buf, MMU_SECTION_SIZE); + size_t size = ALIGN((uintptr_t)smt->buf - start + smt->size, MMU_SECTION_SIZE); + + mmu_set_region_dcache_behaviour(start, size, DCACHE_OFF); + } #endif return 0; -- 2.17.1
