Re: [PATCH 3/3] ath9k: ahb: Add OF support

On Mon, 27 Feb 2017 22:13:21 +0100
Rafał Miłecki [off-list ref] wrote:

Why you didn't cc linux-wireless?!?!

I first wanted to be sure that the devdata part was generally
acceptable, this patch was just included as an example of a user.
But it sound like that part will have to move to nvmem first.
I'll come back with a new patch once MTD support for nvmem is
done.

On 27 February 2017 at 21:28, Alban [off-list ref] wrote:

quoted

@@ -513,6 +515,43 @@ static void ath9k_eeprom_release(struct ath_softc *sc)
        release_firmware(sc->sc_ah->eeprom_blob);
 }

+#ifdef CONFIG_OF
+static int ath9k_init_of(struct ath_softc *sc)
+{
+       struct device_node *np = sc->dev->of_node;
+       struct ath_hw *ah = sc->sc_ah;
+       const void *macaddr;
+       struct clk *clk;
+       int ret = 0;
+
+       if (!np) {
+               dev_err(sc->dev, "no platform data or OF node\n");
+               return -EINVAL;
+       }
+
+       clk = clk_get(sc->dev, "ref");
+       if (!IS_ERR(clk)) {
+               ah->is_clk_25mhz = (clk_get_rate(clk) == 25000000);
+               clk_put(clk);
+       }
+
+       ah->disable_2ghz = of_property_read_bool(np, "qca,disable-2ghz");
+       ah->disable_5ghz = of_property_read_bool(np, "qca,disable-5ghz");  

Please use ieee80211-freq-limit:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b330b25eaabda00d74e47566d9200907da381896

Most likely with the wiphy_read_of_freq_limits helper:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e691ac2f75b69bee743f0370d79454ba4429b17

Example:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f83ff69735651cc7a3d150466a5257ff829b62b

Thanks, I'll check this.

Alban