Searched hist:"0 a7ac9f9" (Results 1 – 2 of 2) sorted by relevance
/qemu/include/hw/sd/ |
H A D | sdhci.h | 0a7ac9f9 Thu Feb 25 21:35:30 GMT 2016 Andrew Baumann <Andrew.Baumann@microsoft.com> sdhci: add quirk property for card insert interrupt status on Raspberry Pi
This quirk is a workaround for the following hardware behaviour, on which UEFI (specifically, the bootloader for Windows on Pi2) depends:
1. at boot with an SD card present, the interrupt status/enable registers are initially zero 2. upon enabling it in the interrupt enable register, the card insert bit in the interrupt status register is immediately set 3. after a subsequent controller reset, the card insert interrupt does not fire, even if enabled in the interrupt enable register
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Message-id: 1456436130-7048-3-git-send-email-Andrew.Baumann@microsoft.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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/qemu/hw/sd/ |
H A D | sdhci.c | 0a7ac9f9 Thu Feb 25 21:35:30 GMT 2016 Andrew Baumann <Andrew.Baumann@microsoft.com> sdhci: add quirk property for card insert interrupt status on Raspberry Pi
This quirk is a workaround for the following hardware behaviour, on which UEFI (specifically, the bootloader for Windows on Pi2) depends:
1. at boot with an SD card present, the interrupt status/enable registers are initially zero 2. upon enabling it in the interrupt enable register, the card insert bit in the interrupt status register is immediately set 3. after a subsequent controller reset, the card insert interrupt does not fire, even if enabled in the interrupt enable register
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Message-id: 1456436130-7048-3-git-send-email-Andrew.Baumann@microsoft.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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