[PATCH v3 13/14] qcom_defconfig: enable livetree

Caleb Connolly caleb.connolly at linaro.org
Tue Mar 19 13:22:12 CET 2024


Qualcomm FDTs are on the larger size, and with the addition of DT
modifications during board_init() it makes sense to enable OF_LIVE
globally. The cost of building the tree should be offset by the
increased efficiency at which we can walk it.

Some rough measurements with CONFIG_BOOTSTAGE suggests that this might
add 0.1-0.2ms to the boot-to-console time. However the reset-to-reset
timer difference is in the range of 0.5ms so this could just be noise.

Suffice to say, no significant slow down.

Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
---
 configs/qcom_defconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configs/qcom_defconfig b/configs/qcom_defconfig
index cbc612b44bd9..eebd0d74bd51 100644
--- a/configs/qcom_defconfig
+++ b/configs/qcom_defconfig
@@ -25,8 +25,11 @@ CONFIG_CMD_UFS=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_CAT=y
 CONFIG_CMD_BMP=y
 CONFIG_CMD_LOG=y
+CONFIG_OF_LIVE=y
+# CONFIG_NET is not set
+# CONFIG_OFNODE_MULTI_TREE is not set
 CONFIG_BUTTON_QCOM_PMIC=y
 CONFIG_CLK=y
 CONFIG_CLK_QCOM_QCS404=y
 CONFIG_CLK_QCOM_SDM845=y

-- 
2.44.0



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