* Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>:
> On 1/18/2018 6:50 PM, Kyle Evans wrote:
> > * Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>:
> >> On 1/12/2018 9:18 PM, Kyle Evans wrote:
> >>> 2) After reboot I get this nasty error...
> >>> [ 0.000000] Kernel command line: console=tty0 selinux=0
> >>> video=1280x800 root=/dev/mmcblk1p1 brcmfmac.bebug=0x20000
> >>> [ 2.269750] mmc0: Invalid maximum block size, assuming 512 bytes
> >>> [ 2.330010] mmc0: SDHCI controller on c8000000.sdhci [c8000000.sdhci]
> >>> using ADMA
> >>> [ 2.645242] mmc0: error -110 whilst initialising SDIO card
> >>
> >> Ok. I suppose you mean a warm reboot. So I suppose the card is not
> >> properly power cycled. If your SDHCI controller driver (is it
> >> sdhci-acpi?) is loaded as a module, you could try to unload it and load
> >> it again. Let me know if that works for you to confirm my guess.
> >
> > Your guess is correct. The following brings up wifi after failure to do
> > so during warm boot.
> >
> > modprobe -r sdhci-tegra; modprobe sdhci-tegra;
>
> Do you know if your uses a device tree and where I can find it?
> Typically, there is a GPIO to the wifi device that needs to be toggled
> using mmc powerseq.
I had a hunch this is was the next step. This device did not ship with a
DT, but I have one in the works. My initial trial & error has been met
with error.
This is what I have so far, which is wrong since adding pwrseq (boot panic):
sdhci@c8000000 {
compatible = "nvidia,tegra20-sdhci";
reg = <0xc8000000 0x200>;
interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA20_CLK_SDMMC1>;
resets = <&tegra_car 14>;
reset-names = "sdhci";
status = "okay";
//power-gpios = <&gpio TEGRA_GPIO(K, 6) GPIO_ACTIVE_HIGH>;
bus-width = <4>;
keep-power-in-suspend;
non-removable;
mmc-pwrseq = <&wlan_rst>;
brcmf: wifi@1 {
compatible = "brcm,bcm4329-fmac";
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(Y, 6) GPIO_ACTIVE_HIGH>,
<TEGRA_GPIO(S, 0) GPIO_ACTIVE_HIGH>;
interrupt-names = "host-wake";
};
};
wlan_rst: sdhci0_pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpio TEGRA_GPIO(K, 6) GPIO_ACTIVE_LOW>;
};
This stuff is from a pre-DT kernel:
#define TF101_WLAN_RST TEGRA_GPIO_PK6
#define TF101_WLAN_WOW TEGRA_GPIO_PS0
#define TF101_SDIO_WOW TEGRA_GPIO_PY6
static struct embedded_sdio_data embedded_sdio_data1 = {
.cccr = {
.sdio_vsn = 2,
.multi_block = 1,
.low_speed = 0,
.wide_bus = 0,
.high_power = 1,
.high_speed = 1,
},
.cis = {
.vendor = 0x02d0,
.device = 0x4329,
},
}
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data1 = {
.mmc_data = {
.register_status_notify = tf101_wifi_status_register,
.embedded_sdio = &embedded_sdio_data1,
.built_in = 0,
},
.wow_gpio = TF101_SDIO_WOW,
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
.max_clk_limit = 40000000,
}
static int tf101_wifi_power(int on)
{
pr_debug("%s: %d\n", __func__, on);
#if 0
gpio_set_value(TF101_WLAN_PWR, on);
mdelay(100);
#endif
gpio_set_value(TF101_WLAN_RST, on);
mdelay(200);
return 0;
}
static int __init tf101_wifi_init(void)
{
//gpio_request(TF101_WLAN_PWR, "wlan_power");
gpio_request(TF101_WLAN_RST, "wlan_rst");
gpio_request(TF101_WLAN_WOW, "bcmsdh_sdmmc");
//tegra_gpio_enable(TF101_WLAN_PWR);
tegra_gpio_enable(TF101_WLAN_RST);
tegra_gpio_enable(TF101_WLAN_WOW);
//gpio_direction_output(TF101_WLAN_PWR, 0);
gpio_direction_output(TF101_WLAN_RST, 0);
gpio_direction_input(TF101_WLAN_WOW);
platform_device_register(&tf101_wifi_device);
device_init_wakeup(&tf101_wifi_device.dev, 1);
device_set_wakeup_enable(&tf101_wifi_device.dev, 0);
return 0;
}
static struct resource tf101_bcm4329_rfkill_resources[] = {
{
.name = "bcm4329_nshutdown_gpio",
.start = TEGRA_GPIO_PU0,
.end = TEGRA_GPIO_PU0,
.flags = IORESOURCE_IO,
},
};
static struct resource tf101_bluesleep_resources[] = {
[0] = {
.name = "gpio_host_wake",
.start = TEGRA_GPIO_PU6,
.end = TEGRA_GPIO_PU6,
.flags = IORESOURCE_IO,
},
[1] = {
.name = "gpio_ext_wake",
.start = TEGRA_GPIO_PU1,
.end = TEGRA_GPIO_PU1,
.flags = IORESOURCE_IO,
},
[2] = {
.name = "host_wake",
.start = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_PU6),
.end = TEGRA_GPIO_TO_IRQ(TEGRA_GPIO_PU6),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
},
};
Asside from getting reboot to work, I am at a loss where to put all of
the wakeup sources and rfkill nodes.
S,0 - WLAN_WOW
Y,6 - SDIO_WOW
U,6 - bt host_wake
U,1 - bt ext_wake
U,0 - rfkill
Thanks,
Kyle
>
> Regards,
> Arend
>
