cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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qca,qca7000.txt (2877B)

      1* Qualcomm QCA7000
      2
      3The QCA7000 is a serial-to-powerline bridge with a host interface which could
      4be configured either as SPI or UART slave. This configuration is done by
      5the QCA7000 firmware.
      6
      7(a) Ethernet over SPI
      8
      9In order to use the QCA7000 as SPI device it must be defined as a child of a
     10SPI master in the device tree.
     11
     12Required properties:
     13- compatible	    : Should be "qca,qca7000"
     14- reg		    : Should specify the SPI chip select
     15- interrupts	    : The first cell should specify the index of the source
     16		      interrupt and the second cell should specify the trigger
     17		      type as rising edge
     18- spi-cpha	    : Must be set
     19- spi-cpol	    : Must be set
     20
     21Optional properties:
     22- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at.
     23		      Numbers smaller than 1000000 or greater than 16000000
     24		      are invalid. Missing the property will set the SPI
     25		      frequency to 8000000 Hertz.
     26- qca,legacy-mode   : Set the SPI data transfer of the QCA7000 to legacy mode.
     27		      In this mode the SPI master must toggle the chip select
     28		      between each data word. In burst mode these gaps aren't
     29		      necessary, which is faster. This setting depends on how
     30		      the QCA7000 is setup via GPIO pin strapping. If the
     31		      property is missing the driver defaults to burst mode.
     32
     33The MAC address will be determined using the optional properties
     34defined in ethernet.txt.
     35
     36SPI Example:
     37
     38/* Freescale i.MX28 SPI master*/
     39ssp2: spi@80014000 {
     40	#address-cells = <1>;
     41	#size-cells = <0>;
     42	compatible = "fsl,imx28-spi";
     43	pinctrl-names = "default";
     44	pinctrl-0 = <&spi2_pins_a>;
     45
     46	qca7000: ethernet@0 {
     47		compatible = "qca,qca7000";
     48		reg = <0x0>;
     49		interrupt-parent = <&gpio3>;      /* GPIO Bank 3 */
     50		interrupts = <25 0x1>;            /* Index: 25, rising edge */
     51		spi-cpha;                         /* SPI mode: CPHA=1 */
     52		spi-cpol;                         /* SPI mode: CPOL=1 */
     53		spi-max-frequency = <8000000>;    /* freq: 8 MHz */
     54		local-mac-address = [ A0 B0 C0 D0 E0 F0 ];
     55	};
     56};
     57
     58(b) Ethernet over UART
     59
     60In order to use the QCA7000 as UART slave it must be defined as a child of a
     61UART master in the device tree. It is possible to preconfigure the UART
     62settings of the QCA7000 firmware, but it's not possible to change them during
     63runtime.
     64
     65Required properties:
     66- compatible        : Should be "qca,qca7000"
     67
     68Optional properties:
     69- local-mac-address : see ./ethernet.txt
     70- current-speed     : current baud rate of QCA7000 which defaults to 115200
     71		      if absent, see also ../serial/serial.yaml
     72
     73UART Example:
     74
     75/* Freescale i.MX28 UART */
     76auart0: serial@8006a000 {
     77	compatible = "fsl,imx28-auart", "fsl,imx23-auart";
     78	reg = <0x8006a000 0x2000>;
     79	pinctrl-names = "default";
     80	pinctrl-0 = <&auart0_2pins_a>;
     81
     82	qca7000: ethernet {
     83		compatible = "qca,qca7000";
     84		local-mac-address = [ A0 B0 C0 D0 E0 F0 ];
     85		current-speed = <38400>;
     86	};
     87};