Messages in this thread Patch in this message | | | From | sunil.m@techveda ... | Subject | [PATCH] arm: dts: am33xx: Add spi alias to match SOC schematics | Date | Tue, 22 Aug 2017 16:27:33 +0530 |
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From: Suniel Mahesh <sunil.m@techveda.org>
Linux bus numbers should match the numbers defined by the chip manufacturer. This patch add's spi aliases to acheive that bus naming convention.
Signed-off-by: Suniel Mahesh <sunil.m@techveda.org> Signed-off-by: Karthik Tummala <karthik@techveda.org> Tested-by: Karthik Tummala <karthik@techveda.org> --- Note: - Patch was compile tested and built(ARCH=arm) on next-20170822. - Patch was hardware tested on AM335x (McSPI controller) with spi flash chips. - No build/run-time issues reported. - At present bus numbers are represented as spi1 and spi2 in sysfs instead of spi0 and spi1, as defined in SOC schematics. - The commit: "spi: Pick spi bus number from Linux idr or spi alias" (SHA1:9b61e302210eba55768962f2f11e96bb508c2408) has introduced bus numbering which happens dynamically either via Linux IDR or spi alias for master drivers. - The commit: "spi: omap: Allocate bus number from spi framework" (SHA1:b590782afe0a99fca84f451252ed7e2d64b2f155) is now using spi framework to allocate bus numbers. --- arch/arm/boot/dts/am33xx.dtsi | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index 7d7ca05..e58fab8 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -36,6 +36,8 @@ phy1 = &usb1_phy; ethernet0 = &cpsw_emac0; ethernet1 = &cpsw_emac1; + spi0 = &spi0; + spi1 = &spi1; }; cpus { -- 1.9.1
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