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Wrong sleep frequency for BCM43340 on GPCLK2? #831
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That looks like a bug, probably due to a misuse of "32KHz" somewhere along the line. I'll be surprised if it changes the behaviour in any significant way, but we'll get it fixed. |
firmware: 2ndstage: Improve i2c_gpio support firmware: i2c_gpio: Improve implementation and usage firmware: Camplus: Enable RAW12 support in the ISP input formatter firmware: scalerlib: Don't flip tiled format and swap R/B firmware: arm_display: Provide mechanism to request tiled format framebuffer See: #820 firmware: platform: Set BT LPO frequency to 32768Hz See: #831
firmware: 2ndstage: Improve i2c_gpio support firmware: i2c_gpio: Improve implementation and usage firmware: Camplus: Enable RAW12 support in the ISP input formatter firmware: scalerlib: Don't flip tiled format and swap R/B firmware: arm_display: Provide mechanism to request tiled format framebuffer See: raspberrypi/firmware#820 firmware: platform: Set BT LPO frequency to 32768Hz See: raspberrypi/firmware#831
A firmware with the correct clock rate is now available via rpi-update. Please test and close if appropriate. |
Since the power management of the brcmfmac is completly disabled i don't expect any changes regarding to Wifi. But i can confirm the LPO frequency is correct now:
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According to the dt-blob.dts the BCM43340 of the Raspberry Pi Zero W seems to uses GPCLK2 as the external Low-Power Oscillator. Looking at the datasheet the Low-Power Oscillator for the BCM43340 chip should have the frequency 32768 Hz. But if i dump the clock settings the frequency is set to 32000 Hz:
Is this intended or a bug?
Maybe this is related to the wifi power managment issues.
Edit: I'm using the latest Raspbian Jessie Lite image 2017-06-21.
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