On Wed, May 04, 2022 at 08:30:06PM -0500, Ryan Eatmon via lists.yoctoproject.org wrote:

From: Nishanth Menon <nm@...>

Update build flag for arm-trusted-firmware to include low power mode
support

K3_PM_SYSTEM_SUSPEND is added in arm-trusted-firmware now which enables
low power mode support for am62xx.

Signed-off-by: Nishanth Menon <nm@...>
Signed-off-by: Praneeth Bajjuri <praneeth@...>
Signed-off-by: Ryan Eatmon <reatmon@...>
---
conf/machine/include/am62xx.inc | 2 ++
recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend | 1 +
2 files changed, 3 insertions(+)

diff --git a/conf/machine/include/am62xx.inc b/conf/machine/include/am62xx.inc
index e8823dd2..ff857b97 100644
--- a/conf/machine/include/am62xx.inc
+++ b/conf/machine/include/am62xx.inc
@@ -6,6 +6,8 @@ MACHINE_FEATURES += "screen touchscreen"
SERIAL_CONSOLES = "115200;ttyS2"
SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"

+TFA_K3_SYSTEM_SUSPEND = "1"

Might want to keep this TFA_ variable together with the other TFA_BOARD being
set futher down in the file, to avoid scattering them all over...

Otherwise looks good to me.

+
# AM62 supports multi-certificate images, use the same
IMAGE_BOOT_FILES = "${IMAGE_BOOT_FILES_MULTI_CERT}"

diff --git a/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend b/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
index 80b1d664..68bfa899 100644
--- a/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
+++ b/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend
@@ -9,6 +9,7 @@ TFA_INSTALL_TARGET_k3 = "bl31"
TFA_SPD_k3 = "opteed"

EXTRA_OEMAKE_append_k3 = "${@ 'K3_USART=' + d.getVar('TFA_K3_USART') if d.getVar('TFA_K3_USART') else ''}"
+EXTRA_OEMAKE_append_k3 = "${@ 'K3_PM_SYSTEM_SUSPEND=' + d.getVar('TFA_K3_SYSTEM_SUSPEND') if d.getVar('TFA_K3_SYSTEM_SUSPEND') else ''}"

do_compile_append_am65xx-hs-evm() {
export TI_SECURE_DEV_PKG=${TI_SECURE_DEV_PKG}
--
2.17.1