| /* |
| * Copyright (c) 2022 Kumar Gala <galak@kernel.org> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| &pinctrl { |
| spim3_loopback: spim3_loopback { |
| group1 { |
| pinmux = <SPIM3_MISO_GPIO37>; |
| output-enable; /* Enable internal loopback */ |
| }; |
| group2 { |
| pinmux = <SPIM3_MOSI_GPIO37>; |
| input-enable; /* Enable internal loopback */ |
| }; |
| group3 { |
| pinmux = <SPIM3_SCLK_GPIO36>, |
| <SPIM3_CSEL_GPIO38>; |
| }; |
| }; |
| }; |
| |
| &spi3 { |
| slow@0 { |
| compatible = "test-spi-loopback-slow"; |
| reg = <0>; |
| spi-max-frequency = <100000>; |
| }; |
| fast@0 { |
| compatible = "test-spi-loopback-fast"; |
| reg = <0>; |
| spi-max-frequency = <16000000>; |
| }; |
| }; |
| |
| &spi3 { |
| dma-enabled; |
| pinctrl-0 = <&spim3_loopback>; |
| }; |