This is a note to let you know that I've just added the patch titled
drivers: meson: secure-pwrc: always enable DMA domain
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drivers-meson-secure-pwrc-always-enable-dma-domain.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 49b686fb56018f69fa0b39db6b7a9378c58838a2
Author: Alexey Romanov <avromanov@xxxxxxxxxxxxxx>
Date: Sat Jun 10 12:04:14 2023 +0300
drivers: meson: secure-pwrc: always enable DMA domain
[ Upstream commit 0bb4644d583789c97e74d3e3047189f0c59c4742 ]
Starting from commit e45f243409db ("firmware: meson_sm:
populate platform devices from sm device tree data") pwrc
is probed successfully and disables unused pwr domains.
By A1 SoC family design, any TEE requires DMA pwr domain
always enabled.
Fixes: b3dde5013e13 ("soc: amlogic: Add support for Secure power domains controller")
Signed-off-by: Alexey Romanov <avromanov@xxxxxxxxxxxxxx>
Acked-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230610090414.90529-1-avromanov@xxxxxxxxxxxxxx
[narmstrong: added fixes tag]
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/soc/amlogic/meson-secure-pwrc.c b/drivers/soc/amlogic/meson-secure-pwrc.c
index 2eeea5e1b3b7f..2f3ca5531fa96 100644
--- a/drivers/soc/amlogic/meson-secure-pwrc.c
+++ b/drivers/soc/amlogic/meson-secure-pwrc.c
@@ -104,7 +104,7 @@ static struct meson_secure_pwrc_domain_desc a1_pwrc_domains[] = {
SEC_PD(ACODEC, 0),
SEC_PD(AUDIO, 0),
SEC_PD(OTP, 0),
- SEC_PD(DMA, 0),
+ SEC_PD(DMA, GENPD_FLAG_ALWAYS_ON | GENPD_FLAG_IRQ_SAFE),
SEC_PD(SD_EMMC, 0),
SEC_PD(RAMA, 0),
/* SRAMB is used as ATF runtime memory, and should be always on */
