From: Christer Weinigel <christer@weinigel.se> To: linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org Cc: Christer Weinigel <christer@weinigel.se>, Mark Brown <broonie@kernel.org> Subject: [PATCH] devicetree - document using aliases to set spi bus number. Date: Tue, 24 May 2016 18:39:20 +0200 [thread overview] Message-ID: <1464107960-10775-1-git-send-email-christer@weinigel.se> (raw) Document how to use devicetree aliases to assign a stable bus number to a spi bus. Signed-off-by: Christer Weinigel <christer@weinigel.se> --- Trivial documentation change. Not having used devicetree that much it was surprisingly hard to figure out how to assign a stable bus number to a spi bus. Add a simple example that shows how to do that. Mark Cced as the SPI maintainer. Or should trivial documentation fixes like this be addressed to someone else? /Christer Documentation/devicetree/bindings/spi/spi-bus.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt index 42d5954..c35c4c2 100644 --- a/Documentation/devicetree/bindings/spi/spi-bus.txt +++ b/Documentation/devicetree/bindings/spi/spi-bus.txt @@ -94,3 +94,13 @@ SPI example for an MPC5200 SPI bus: reg = <1>; }; }; + +Normally SPI buses are assigned dynamic bus numbers starting at 32766 +and counting downwards. It is possible to assign the bus number +statically using devicetee aliases. For example, on the MPC5200 the +"spi@f00" device above is connected to the "soc" bus. To set its +bus_num to 1 add an aliases entry like this: + + aliases { + spi1 = "/soc/spi@f00"; + }; -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Christer Weinigel <christer-rKHMIqA5R6gwFerOooGFRg@public.gmane.org> To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Christer Weinigel <christer-rKHMIqA5R6gwFerOooGFRg@public.gmane.org>, Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Subject: [PATCH] devicetree - document using aliases to set spi bus number. Date: Tue, 24 May 2016 18:39:20 +0200 [thread overview] Message-ID: <1464107960-10775-1-git-send-email-christer@weinigel.se> (raw) Document how to use devicetree aliases to assign a stable bus number to a spi bus. Signed-off-by: Christer Weinigel <christer-rKHMIqA5R6gwFerOooGFRg@public.gmane.org> --- Trivial documentation change. Not having used devicetree that much it was surprisingly hard to figure out how to assign a stable bus number to a spi bus. Add a simple example that shows how to do that. Mark Cced as the SPI maintainer. Or should trivial documentation fixes like this be addressed to someone else? /Christer Documentation/devicetree/bindings/spi/spi-bus.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt index 42d5954..c35c4c2 100644 --- a/Documentation/devicetree/bindings/spi/spi-bus.txt +++ b/Documentation/devicetree/bindings/spi/spi-bus.txt @@ -94,3 +94,13 @@ SPI example for an MPC5200 SPI bus: reg = <1>; }; }; + +Normally SPI buses are assigned dynamic bus numbers starting at 32766 +and counting downwards. It is possible to assign the bus number +statically using devicetee aliases. For example, on the MPC5200 the +"spi@f00" device above is connected to the "soc" bus. To set its +bus_num to 1 add an aliases entry like this: + + aliases { + spi1 = "/soc/spi@f00"; + }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next reply other threads:[~2016-05-24 16:47 UTC|newest] Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-05-24 16:39 Christer Weinigel [this message] 2016-05-24 16:39 ` [PATCH] devicetree - document using aliases to set spi bus number Christer Weinigel 2016-05-24 17:20 ` Mark Brown 2016-05-24 18:03 ` Christer Weinigel 2016-05-24 18:32 ` Mark Brown 2016-05-24 18:57 ` Christer Weinigel 2016-05-24 18:57 ` Christer Weinigel 2016-05-25 12:19 ` Mark Rutland 2016-05-25 12:19 ` Mark Rutland 2016-05-25 12:50 ` Mark Brown 2016-05-25 12:33 ` Mark Brown 2016-05-25 12:33 ` Mark Brown 2016-05-24 23:34 ` Frank Rowand 2016-05-24 23:34 ` Frank Rowand 2016-05-25 0:18 ` Frank Rowand 2016-05-25 0:18 ` Frank Rowand 2016-05-25 17:49 ` Rob Herring 2016-05-25 18:03 ` Mark Brown 2016-05-25 18:06 ` Frank Rowand 2016-05-25 18:44 ` Mark Brown 2016-05-26 1:10 ` Christer Weinigel 2016-05-26 1:44 ` Rob Herring 2016-05-26 1:44 ` Rob Herring 2016-05-26 1:56 ` Christer Weinigel 2016-05-26 10:07 ` Mark Brown 2016-05-26 10:07 ` Mark Brown 2016-05-26 10:58 ` Christer Weinigel 2016-05-26 18:47 ` Mark Brown 2016-05-26 18:47 ` Mark Brown 2016-05-26 21:04 ` Christer Weinigel 2016-05-26 21:04 ` Christer Weinigel 2016-05-27 16:43 ` Mark Brown 2016-05-24 17:41 ` Mark Rutland 2016-05-24 20:41 ` Frank Rowand 2016-05-25 9:20 ` Mark Rutland 2016-05-25 9:20 ` Mark Rutland 2016-05-25 10:38 ` Mark Brown 2016-05-25 10:38 ` Mark Brown 2016-05-25 11:20 ` Christer Weinigel 2016-05-25 12:34 ` Mark Rutland 2016-05-25 12:34 ` Mark Rutland 2016-05-25 13:08 ` Mark Brown 2016-05-25 13:08 ` Mark Brown 2016-05-25 15:32 ` Frank Rowand 2016-05-25 15:32 ` Frank Rowand 2016-05-25 15:59 ` Mark Rutland 2016-05-25 15:59 ` Mark Rutland 2016-05-25 16:21 ` Frank Rowand 2016-05-25 16:21 ` Frank Rowand 2016-05-25 18:02 ` Mark Brown 2016-05-25 17:48 ` Mark Brown 2016-05-25 17:48 ` Mark Brown 2016-05-25 18:46 ` Frank Rowand 2016-05-27 18:36 ` Mark Brown 2016-05-27 18:36 ` Mark Brown 2016-05-28 20:57 ` Christer Weinigel 2016-05-30 16:13 ` Mark Brown 2016-05-30 16:13 ` Mark Brown 2016-05-25 15:25 ` Frank Rowand 2016-05-25 15:25 ` Frank Rowand 2016-05-25 16:06 ` Mark Rutland 2016-05-25 16:06 ` Mark Rutland 2016-05-25 16:31 ` Frank Rowand 2016-05-25 18:44 ` Rob Herring 2016-05-25 18:44 ` Rob Herring 2016-05-25 18:48 ` Mark Brown 2016-05-25 18:48 ` Mark Brown 2016-05-26 8:21 ` Geert Uytterhoeven 2016-05-26 8:21 ` Geert Uytterhoeven
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