diff options
Diffstat (limited to 'arch/arm/boot/dts/r8a7790-lager.dts')
| -rw-r--r-- | arch/arm/boot/dts/r8a7790-lager.dts | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index 052dcee4790d..aa6ca92a9485 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -3,6 +3,7 @@ * * Copyright (C) 2013-2014 Renesas Solutions Corp. * Copyright (C) 2014 Cogent Embedded, Inc. + * Copyright (C) 2015-2016 Renesas Electronics Corporation * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any @@ -49,6 +50,7 @@ aliases { serial0 = &scif0; serial1 = &scifa1; + i2c8 = "i2cexio"; }; chosen { @@ -252,6 +254,23 @@ #clock-cells = <0>; clock-frequency = <148500000>; }; + + /* + * IIC0/I2C0 is routed to EXIO connector A, pins 114 (SCL) + 116 (SDA) only. + * We use the I2C demuxer, so the desired IP core can be selected at runtime + * depending on the use case (e.g. DMA with IIC0 or slave support with I2C0). + * Note: For testing the I2C slave feature, it is convenient to connect this + * bus with IIC3 on pins 110 (SCL) + 112 (SDA), select I2C0 at runtime, and + * instantiate the slave device at runtime according to the documentation. + * You can then communicate with the slave via IIC3. + */ + i2cexio: i2c@8 { + compatible = "i2c-demux-pinctrl"; + i2c-parent = <&iic0>, <&i2c0>; + i2c-bus-name = "i2c-exio"; + #address-cells = <1>; + #size-cells = <0>; + }; }; &du { @@ -291,6 +310,9 @@ }; &pfc { + pinctrl-0 = <&scif_clk_pins>; + pinctrl-names = "default"; + du_pins: du { renesas,groups = "du_rgb666", "du_sync_1", "du_clk_out_0"; renesas,function = "du"; @@ -301,6 +323,11 @@ renesas,function = "scif0"; }; + scif_clk_pins: scif_clk { + renesas,groups = "scif_clk"; + renesas,function = "scif_clk"; + }; + ether_pins: ether { renesas,groups = "eth_link", "eth_mdio", "eth_rmii"; renesas,function = "eth"; @@ -342,6 +369,11 @@ renesas,function = "msiof1"; }; + i2c0_pins: i2c0 { + renesas,groups = "i2c0"; + renesas,function = "i2c0"; + }; + iic0_pins: iic0 { renesas,groups = "iic0"; renesas,function = "iic0"; @@ -485,6 +517,11 @@ status = "okay"; }; +&scif_clk { + clock-frequency = <14745600>; + status = "okay"; +}; + &msiof1 { pinctrl-0 = <&msiof1_pins>; pinctrl-names = "default"; @@ -524,10 +561,14 @@ cpu0-supply = <&vdd_dvfs>; }; +&i2c0 { + pinctrl-0 = <&i2c0_pins>; + pinctrl-names = "i2c-exio"; +}; + &iic0 { - status = "okay"; pinctrl-0 = <&iic0_pins>; - pinctrl-names = "default"; + pinctrl-names = "i2c-exio"; }; &iic1 { |