Part Number: M2-CC3351
Hi,
I'm trying to bring up the out-of-tree cc33xx driver with the M2-CC3351 EVK.
Our host is the RK3588 on the ROCK-5B SBC. Since the features we need are available in mainline Linux I've been using the 6.12 kernel for the bringup.
As the driver patches in
https://github.com/TexasInstruments-Sandbox/cc33xx-linux-mpu-ports
wouldn't apply to virtually anything cleanly, driver sources are taken from
https://github.com/TexasInstruments/ti-linux-kernel.git
Branch: ti-linux-6.12.y
Tag: cicd.scarthgap.202601300920
This driver will build after a trivial debugfs fix:
diff --git a/drivers/net/wireless/ti/cc33xx/debugfs.c b/drivers/net/wireless/ti/cc33xx/debugfs.c
index c9fb8c05148c..7615ca106fc3 100644
--- a/drivers/net/wireless/ti/cc33xx/debugfs.c
+++ b/drivers/net/wireless/ti/cc33xx/debugfs.c
@@ -221,8 +221,8 @@ static ssize_t radar_debug_mode_write(struct file *file,
goto out;
cc33xx_for_each_wlvif_ap(wl, wlvif) {
- wlcore_cmd_generic_cfg(wl, wlvif,
- WLCORE_CFG_FEATURE_RADAR_DEBUG,
+ cc33xx_cmd_generic_cfg(wl, wlvif,
+ CC33XX_CFG_FEATURE_RADAR_DEBUG,
wl->radar_debug_mode, 0);
}
@@ -248,12 +248,14 @@ static const struct file_operations radar_debug_mode_ops = {
.llseek = default_llseek,
};
-static void cc33xx_debugfs_add_files_helper(struct dentry *moddir)
+static void cc33xx_debugfs_add_files_helper(struct cc33xx *wl,
+ struct dentry *moddir)
{
DEBUGFS_ADD(radar_debug_mode, moddir);
}
#else
-static void cc33xx_debugfs_add_files_helper(struct dentry *moddir) {}
+static void cc33xx_debugfs_add_files_helper(struct cc33xx *wl,
+ struct dentry *moddir) {}
#endif /* CFG80211_CERTIFICATION_ONUS */
@@ -1935,7 +1937,7 @@ static int cc33xx_debugfs_add_files(struct cc33xx *wl,
DEBUGFS_ADD(conf, moddir);
DEBUGFS_ADD(radar_detection, moddir);
- cc33xx_debugfs_add_files_helper(moddir);
+ cc33xx_debugfs_add_files_helper(wl, moddir);
DEBUGFS_ADD(dynamic_fw_traces, moddir);
return 0;
--
Firmware files are taken from ti-processor-sdk-linux-am335x-evm-09.01.00.001, namely
root@rock-5b:~# ls -1 /lib/firmware/ti-connectivity/
cc33xx-conf.bin
cc33xx_2nd_loader.bin
cc33xx_fw.bin
Our device is recognized:
clock: 25000000 Hz
actual clock: 25000000 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 2 (4 bits)
timing spec: 0 (legacy)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B)
However, I've found it interesting that despite modalias matching (sdio:c*v0097d4077*), cc33xx_sdio will only load automatically if "ti,cc33xx" compatibility is explicitly provided in a host controller sub-node.
And then... silence.
I've tried to increase cc33xx verbosity with debug_level=0xffffffff, to no avail.
Could you confirm that SDIO-only (no host-wake GPIO) operation works?
If not, would it be possible to provide a working RK3588 DTS snippet that this specific device requires?
The host controller node for the M.2 Key E socket is by default as follows:
&sdio {
max-frequency = <200000000>;
no-sd;
no-mmc;
non-removable;
bus-width = <4>;
cap-sdio-irq;
disable-wp;
keep-power-in-suspend;
wakeup-source;
sd-uhs-sdr12;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
vmmc-supply = <&vcc3v3_pcie2x1l0>;
vqmmc-supply = <&vcc_1v8_s3>;
pinctrl-names = "default";
pinctrl-0 = <&sdiom0_pins>;
status = "okay";
};
Thank you for your help, it is very much appreciated!
Kind regards,
