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| author | Cristian Birsan <cristian.birsan@microchip.com> | 2023-06-16 18:29:32 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2023-06-20 23:03:19 +0200 |
| commit | 11d5441cde740c89252290e04ad79f133c366bdb (patch) | |
| tree | faae134f0a9771a94159fecbde4b211b62ac1029 /arch/arm | |
| parent | 982e6e1966ace3aa70cbe45822eb848eace78ade (diff) | |
arm: dts: Enable device-tree overlay support for AT91 boards
Add the '-@' DTC option for AT91 boards that have device-tree overlays.
This option populates the '__symbols__' node that contains all the
necessary symbols for supporting device-tree overlays (from bootloader)
on these devices.
This change increases the size of the resulting DTB with ~30%-40%. Below
are the measurements performed v6.4-rc6:
at91-sam9x60_curiosity.dtb 28499 -> 36641 bytes
at91-sam9x60ek.dtb 30867 -> 39609 bytes
at91-sama5d27_som1_ek.dtb 26086 -> 34166 bytes
at91-sama5d27_wlsom1_ek.dtb 26045 -> 33184 bytes
at91-sama5d2_icp.dtb 27521 -> 36155 bytes
at91-sama5d2_ptc_ek.dtb 23237 -> 29612 bytes
at91-sama5d2_xplained.dtb 27262 -> 35326 bytes
at91-sama5d3_eds.dtb 27924 -> 39939 bytes
at91-sama5d3_xplained.dtb 28400 -> 40650 bytes
at91-sama5d4_xplained.dtb 26456 -> 36107 bytes
at91-sama7g5ek.dtb 29212 -> 37289 bytes
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Link: https://lore.kernel.org/r/20230616152932.1484154-1-cristian.birsan@microchip.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/Makefile | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 29b1386e24cd..7e0f392dffde 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -50,9 +50,21 @@ dtb-$(CONFIG_SOC_AT91SAM9) += \ at91sam9g35ek.dtb \ at91sam9x25ek.dtb \ at91sam9x35ek.dtb +# Enables support for device-tree overlays +DTC_FLAGS_at91-sam9x60_curiosity := -@ +DTC_FLAGS_at91-sam9x60ek := -@ dtb-$(CONFIG_SOC_SAM9X60) += \ at91-sam9x60_curiosity.dtb \ at91-sam9x60ek.dtb +# Enables support for device-tree overlays +DTC_FLAGS_at91-sama5d27_som1_ek := -@ +DTC_FLAGS_at91-sama5d27_wlsom1_ek := -@ +DTC_FLAGS_at91-sama5d2_icp := -@ +DTC_FLAGS_at91-sama5d2_ptc_ek := -@ +DTC_FLAGS_at91-sama5d2_xplained := -@ +DTC_FLAGS_at91-sama5d3_eds := -@ +DTC_FLAGS_at91-sama5d3_xplained := -@ +DTC_FLAGS_at91-sama5d4_xplained := -@ dtb-$(CONFIG_SOC_SAM_V7) += \ at91-kizbox2-2.dtb \ at91-kizbox3-hs.dtb \ @@ -79,6 +91,8 @@ dtb-$(CONFIG_SOC_SAM_V7) += \ at91-sama5d4_xplained.dtb \ at91-sama5d4ek.dtb \ at91-vinco.dtb +# Enables support for device-tree overlays +DTC_FLAGS_at91-sama7g5ek := -@ dtb-$(CONFIG_SOC_SAMA7G5) += \ at91-sama7g5ek.dtb dtb-$(CONFIG_SOC_SP7021) += \ |