bindings/mfd/aspeed-lpc.yaml

5 $id: http://devicetree.org/schemas/mfd/aspeed-lpc.yaml#
8 title: Aspeed Low Pin Count (LPC) Bus Controller
15   The LPC bus is a means to bridge a host CPU to a number of low-bandwidth
17   primary use case of the Aspeed LPC controller is as a slave on the bus
21   The LPC controller is represented as a multi-function device to account for the
26   * An LPC Host Interface Controller manages functions exposed to the host such
27     as LPC firmware hub cycles, configuration of the LPC-to-AHB mapping, UART
34   Additionally the state of the LPC controller influences the pinmux
42           - aspeed,ast2400-lpc-v2
43           - aspeed,ast2500-lpc-v2
44           - aspeed,ast2600-lpc-v2
60   "^lpc-ctrl@[0-9a-f]+$":
65       The LPC Host Interface Controller manages functions exposed to the host such as
66       LPC firmware hub cycles, configuration of the LPC-to-AHB mapping, UART management
73               - aspeed,ast2400-lpc-ctrl
74               - aspeed,ast2500-lpc-ctrl
75               - aspeed,ast2600-lpc-ctrl
85         description: handle to memory reservation for the LPC to AHB mapping region
89 …description: The SPI flash controller containing the flash to be exposed over the LPC to AHB mappi…
101       state of the LPC bus. Some systems may chose to modify this configuration
107               - aspeed,ast2400-lpc-reset
108               - aspeed,ast2500-lpc-reset
109               - aspeed,ast2600-lpc-reset
121   "^lpc-snoop@[0-9a-f]+$":
126       The LPC snoop interface allows the BMC to listen on and record the data
127       bytes written by the Host to the targeted LPC I/O pots.
133               - aspeed,ast2400-lpc-snoop
134               - aspeed,ast2500-lpc-snoop
135               - aspeed,ast2600-lpc-snoop
145         description: The LPC I/O ports to snoop
154     description: The UART routing control under LPC register space
171     lpc: lpc@1e789000 {
172         compatible = "aspeed,ast2600-lpc-v2", "simple-mfd", "syscon";
179         lpc_ctrl: lpc-ctrl@80 {
180             compatible = "aspeed,ast2600-lpc-ctrl";
188             compatible = "aspeed,ast2600-lpc-reset";
193         lpc_snoop: lpc-snoop@90 {
194             compatible = "aspeed,ast2600-lpc-snoop";