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The FlexCAN driver assumed that FlexCAN controller is big endian for powerpc architecture and little endian for other architectures. But this may not be the case. FlexCAN controller can be little or big endian on any architecture. For e.g. NXP LS1021A ARM based SOC has big endian FlexCAN controller. Therefore, the driver has been modified to add a provision for both types of controllers using an additional device tree property. On a "fsl,p1010-flexcan" device BE is default, on all other devices LE is. Big Endian controllers should have "big-endian" set in the device tree. check "Documentation/devicetree/bindings/net/can/fsl-flexcan.txt" for usage. This is the standard practice followed in linux. for more info check: Documentation/devicetree/bindings/common-properties.txt Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com> Signed-off-by: Sakar Arora <Sakar.Arora@freescale.com> Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com> Reviewed-by: Poonam Aggrwal <poonam.aggrwal@nxp.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.