conf/machine: am62xx: Update build flag for low power mode

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@ti.com>
Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>

2 files changed, 3 insertions, 0 deletions

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"
+
 # 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}