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mac80211 ath9k: force QCA953x clock to 25MHz

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The QCA953x only supports 25 MHz refclk, however some OEMs set an
invalid bootstrap value for the REF_CLK option, which would break the
clock detection in ath9k.

Force the QCA953x refclk to 25MHz in ath9k, as this is (according to the
datasheet) the only valid frequency.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer
2019-11-05 22:28:39 +01:00
parent f96af28272
commit 4c6fe32468
1 changed files with 13 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
package/kernel/mac80211/patches/ath/552-ahb_of.patch
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@@ -16,7 +16,7 @@
static const struct platform_device_id ath9k_platform_id_table[] = { static const struct platform_device_id ath9k_platform_id_table[] = {
{ {
@@ -69,6 +77,235 @@ static const struct ath_bus_ops ath_ahb_ @@ -69,6 +77,242 @@ static const struct ath_bus_ops ath_ahb_
.eeprom_read = ath_ahb_eeprom_read, .eeprom_read = ath_ahb_eeprom_read,
}; };
@@ -232,7 +232,14 @@
+ pdata->external_reset = data->wmac_reset; + pdata->external_reset = data->wmac_reset;
+ } + }
+ +
+ if (data->bootstrap_reg && data->bootstrap_ref) { + if (data->dev_id == AR9300_DEVID_AR953X) {
+ /*
+ * QCA953x only supports 25MHz refclk.
+ * Some vendors have an invalid bootstrap option
+ * set, which would break the WMAC here.
+ */
+ pdata->is_clk_25mhz = true;
+ } else if (data->bootstrap_reg && data->bootstrap_ref) {
+ u32 t = ath79_reset_rr(data->bootstrap_reg); + u32 t = ath79_reset_rr(data->bootstrap_reg);
+ if (t & data->bootstrap_ref) + if (t & data->bootstrap_ref)
+ pdata->is_clk_25mhz = false; + pdata->is_clk_25mhz = false;
@@ -252,7 +259,7 @@
static int ath_ahb_probe(struct platform_device *pdev) static int ath_ahb_probe(struct platform_device *pdev)
{ {
void __iomem *mem; void __iomem *mem;
@@ -80,6 +317,17 @@ static int ath_ahb_probe(struct platform @@ -80,6 +324,17 @@ static int ath_ahb_probe(struct platform
int ret = 0; int ret = 0;
struct ath_hw *ah; struct ath_hw *ah;
char hw_name[64]; char hw_name[64];
@@ -270,7 +277,7 @@
if (!dev_get_platdata(&pdev->dev)) { if (!dev_get_platdata(&pdev->dev)) {
dev_err(&pdev->dev, "no platform data specified\n"); dev_err(&pdev->dev, "no platform data specified\n");
@@ -122,13 +370,16 @@ static int ath_ahb_probe(struct platform @@ -122,13 +377,16 @@ static int ath_ahb_probe(struct platform
sc->mem = mem; sc->mem = mem;
sc->irq = irq; sc->irq = irq;
@@ -288,7 +295,7 @@
if (ret) { if (ret) {
dev_err(&pdev->dev, "failed to initialize device\n"); dev_err(&pdev->dev, "failed to initialize device\n");
goto err_irq; goto err_irq;
@@ -159,6 +410,9 @@ static int ath_ahb_remove(struct platfor @@ -159,6 +417,9 @@ static int ath_ahb_remove(struct platfor
free_irq(sc->irq, sc); free_irq(sc->irq, sc);
ieee80211_free_hw(sc->hw); ieee80211_free_hw(sc->hw);
} }
@@ -298,7 +305,7 @@
return 0; return 0;
} }
@@ -168,6 +422,9 @@ static struct platform_driver ath_ahb_dr @@ -168,6 +429,9 @@ static struct platform_driver ath_ahb_dr
.remove = ath_ahb_remove, .remove = ath_ahb_remove,
.driver = { .driver = {
.name = "ath9k", .name = "ath9k",