src/soc/mediatek/mt8173/spi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <assert.h>
   5 #include <gpio.h>
   6 #include <spi_flash.h>
   7 #include <soc/addressmap.h>
   8 #include <soc/flash_controller_common.h>
   9 #include <soc/spi.h>
  10
  11 struct mtk_spi_bus spi_bus[SPI_BUS_NUMBER] = {
  12         {
  13                 .regs = (void *)SPI_BASE,
  14                 .cs_gpio = GPIO(MSDC2_CMD),
  15         }
  16 };
  17
  18 void mtk_spi_set_gpio_pinmux(unsigned int bus,
  19                              enum spi_pad_mask pad_select)
  20 {
  21         /* TODO: implement support for other pads when needed */
  22         assert(pad_select == SPI_PAD1_MASK);
  23         gpio_set_mode(GPIO(MSDC2_DAT2), PAD_MSDC2_DAT2_FUNC_SPI_CK_1);
  24         gpio_set_mode(GPIO(MSDC2_DAT3), PAD_MSDC2_DAT3_FUNC_SPI_MI_1);
  25         gpio_set_mode(GPIO(MSDC2_CLK), PAD_MSDC2_CLK_FUNC_SPI_MO_1);
  26         gpio_set_mode(GPIO(MSDC2_CMD), 0);
  27 }
  28
  29 static const struct spi_ctrlr spi_flash_ctrlr = {
  30         .max_xfer_size = 65535,
  31         .flash_probe = mtk_spi_flash_probe,
  32 };
  33
  34 const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
  35         {
  36                 .ctrlr = &spi_ctrlr,
  37                 .bus_start = 0,
  38                 .bus_end = SPI_BUS_NUMBER - 1,
  39         },
  40         {
  41                 .ctrlr = &spi_flash_ctrlr,
  42                 .bus_start = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
  43                 .bus_end = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
  44         },
  45 };
  46
  47 const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);