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* dt-bindings: i2c: rcar: Add r8a774a1 supportFabrizio Castro2018-08-201-1/+3
| | | | | | | | | | | Document RZ/G2M (R8A774A1) I2C compatibility with the relevant driver dt-bindings. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: Add compatible support for r8a77990 (R-Car E3)Hiromitsu Yamasaki2018-07-211-0/+1
| | | | | | | | | | This patch adds compatible string support for the Renesas R-Car E3 (r8a77990) SoC. Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: document R8A77980 bindingsSergei Shtylyov2018-05-291-0/+1
| | | | | | | | | | R-Car V3H (R8A77980) SoC also has the R-Car gen3 compatible I2C controller, so document the SoC specific bindings. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* dt-bindings: i2c: document R8A77965 bindingsWolfram Sang2018-03-241-0/+1
| | | | | | | | R-Car M3-N (R8A77965) SoC has a R-Car Gen3-compatible I2C controller. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* dt-bindings: i2c: document R8A77995 bindingsUlrich Hecht2018-02-261-0/+1
| | | | | | | | | | R-Car D3 (R8A77995) SoC has a R-Car Gen3-compatible I2C controller. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: document R8A77970 bindingsSergei Shtylyov2017-10-181-0/+1
| | | | | | | | | | R-Car V3M (R8A77970) SoC also has the R-Car gen3 compatible I2C controller, so document the SoC specific bindings. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* dt-bindings: i2c: Document r8a7743/5 supportBiju Das2017-08-121-1/+4
| | | | | | | | | | Document i2c Device Tree support for RZ/G1[ME] (also known as r8aA774[35]) SoCs. They are compatible with R-Car Gen2 SoC family. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: Add per-Generation fallback bindingsSimon Horman2016-12-111-12/+20
| | | | | | | | | | | | | | | | | | | | | | | | | In the case of Renesas R-Car hardware we know that there are generations of SoCs, e.g. Gen 2 and Gen 3. But beyond that it's not clear what the relationship between IP blocks might be. For example, I believe that r8a7790 is older than r8a7791 but that doesn't imply that the latter is a descendant of the former or vice versa. We can, however, by examining the documentation and behaviour of the hardware at run-time observe that the current driver implementation appears to be compatible with the IP blocks on SoCs within a given generation. For the above reasons and convenience when enabling new SoCs a per-generation fallback compatibility string scheme is being adopted for drivers for Renesas SoCs. Also: * Deprecate renesas,i2c-rcar. It seems poorly named as it is only compatible with R-Car Gen 1. It also appears unused in mainline. * Add some text to describe per-SoC bindings Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add support for r8a7796 (R-Car M3-W)Ulrich Hecht2016-09-161-0/+1
| | | | | | | Same as r8a7795. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add DMA supportNiklas Söderlund2016-05-151-0/+3
| | | | | | | | | | | | | | | | | | Make it possible to transfer i2c message buffers via DMA. Start/Stop/Sending_Slave_Address and some data is still handled using the old state machine, it is sending the bulk of the data that is done via DMA. The first byte of a transmission and the last two bytes of reception are sent/received using PIO. This is needed for the HW to have access to the first byte before DMA transmit and to be able to set the STOP condition for DMA reception. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: fixed a checkpatch warning] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* dt-bindings: i2c: Spelling s/propoerty/property/Geert Uytterhoeven2016-03-181-1/+1
| | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: honor additional i2c timings from DTWolfram Sang2015-12-141-0/+4
| | | | | Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add support for r8a7795 (R-Car H3)Wolfram Sang2015-10-201-0/+1
| | | | | | | | | Enable the I2C core for this SoC. I add a new type because this version has new features (e.g. DMA) which will be added somewhen later. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add compatibles for additional SoCWolfram Sang2014-06-011-0/+3
| | | | | Signed-off-by: Wolfram Sang <wsa@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add compatible entry for r8a7791Wolfram Sang2014-02-261-4/+10
| | | | | | | | While we are here, also brush up the devicetree binding documentation. The example was an inappropriate copy from the sh_mobile driver. Signed-off-by: Wolfram Sang <wsa@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* i2c: rcar: add Device Tree supportGuennadi Liakhovetski2013-09-301-0/+23
This patch adds Device Tree support to the i2c-rcar driver and respective documentation. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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