From: <cristian.birsan@microchip.com> To: <arnd@arndb.de>, <olof@lixom.net>, <soc@kernel.org>, <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org> Cc: <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Cristian Birsan <cristian.birsan@microchip.com> Subject: [PATCH] arm: dts: Enable device-tree overlay support for AT91 boards Date: Fri, 16 Jun 2023 18:29:32 +0300 [thread overview] Message-ID: <20230616152932.1484154-1-cristian.birsan@microchip.com> (raw) From: Cristian Birsan <cristian.birsan@microchip.com> 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> --- arch/arm/boot/dts/Makefile | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 59829fc90315..38b82af2bf69 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) += \ -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: <cristian.birsan@microchip.com> To: <arnd@arndb.de>, <olof@lixom.net>, <soc@kernel.org>, <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org> Cc: <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Cristian Birsan <cristian.birsan@microchip.com> Subject: [PATCH] arm: dts: Enable device-tree overlay support for AT91 boards Date: Fri, 16 Jun 2023 18:29:32 +0300 [thread overview] Message-ID: <20230616152932.1484154-1-cristian.birsan@microchip.com> (raw) From: Cristian Birsan <cristian.birsan@microchip.com> 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> --- arch/arm/boot/dts/Makefile | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 59829fc90315..38b82af2bf69 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) += \ -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-06-16 15:30 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-06-16 15:29 cristian.birsan [this message] 2023-06-16 15:29 ` [PATCH] arm: dts: Enable device-tree overlay support for AT91 boards cristian.birsan 2023-06-20 21:21 ` patchwork-bot+linux-soc 2023-06-21 9:31 ` Claudiu.Beznea 2023-06-21 9:31 ` Claudiu.Beznea
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