diff options
| author | Simon Glass <sjg@chromium.org> | 2011-06-14 15:00:25 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-29 10:39:35 -0700 |
| commit | c2f963b424c0e1f7210489b5646d7862570ec8f5 (patch) | |
| tree | 9b459dceac57ce7107d101f1f47736795a423c2b /common/fdt_decode.c | |
| parent | b994da09cbfa7cb94d5c9c6501770cfec3fa5b94 (diff) | |
fdt: tegra2: Support SDMMC config through FDT
This adds FDT configuration of USB ports.
BUG=chromium-os:11623
TEST=Build and boot u-boot; run mmc_boot
Change-Id: I62c015c64e3c3d9996b7117136eb636333fdc0e1
Reviewed-on: http://gerrit.chromium.org/gerrit/2781
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/fdt_decode.c')
| -rw-r--r-- | common/fdt_decode.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/common/fdt_decode.c b/common/fdt_decode.c index 049646cad84..fd849cc3f0e 100644 --- a/common/fdt_decode.c +++ b/common/fdt_decode.c @@ -38,6 +38,7 @@ static const char *compat_names[COMPAT_COUNT] = { COMPAT(NVIDIA_SPI_UART_SWITCH, "nvidia,spi-uart-switch"), COMPAT(SERIAL_NS16550, "ns16550"), COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra250-usb"), + COMPAT(NVIDIA_TEGRA20_SDHCI, "nvidia,tegra250-sdhci"), }; /** @@ -375,6 +376,25 @@ static int decode_gpio_list(const void *blob, int node, const char *property, return 0; } +/** + * Decode a single GPIOs from an FDT. + * + * @param blob FDT blob to use + * @param node Node to look at + * @param property Node property name + * @param gpio gpio elements to fill from FDT + * @return 0 if ok, -FDT_ERR_MISSING if the property is missing. + */ +static int decode_gpio(const void *blob, int node, const char *property, + struct fdt_gpio_state *gpio) +{ + int err; + + gpio->gpio = FDT_GPIO_NONE; + err = decode_gpios(blob, node, property, gpio, 1); + return err == 1 ? 0 : err; +} + void fdt_setup_gpio(struct fdt_gpio_state *gpio) { if (!fdt_gpio_isvalid(gpio)) @@ -473,3 +493,19 @@ int fdt_decode_usb(const void *blob, int node, unsigned osc_frequency_mhz, return get_int_array(blob, clk_node, "params", config->params, PARAM_COUNT); } + +int fdt_decode_sdmmc(const void *blob, int node, struct fdt_sdmmc *config) +{ + config->reg = (struct tegra2_mmc *)get_addr(blob, node, "reg"); + config->enabled = get_is_enabled(blob, node, 1); + config->periph_id = get_int(blob, node, "periph-id", -1); + config->width = get_int(blob, node, "width", -1); + if (config->periph_id == -1 || config->width == -1) + return -FDT_ERR_MISSING; + + /* These GPIOs are optional */ + decode_gpio(blob, node, "cd-gpio", &config->cd_gpio); + decode_gpio(blob, node, "wp-gpio", &config->wp_gpio); + decode_gpio(blob, node, "power-gpio", &config->power_gpio); + return 0; +} |