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Subject[PATCH v4 0/6] Make deferring probe forever optional
Date
This series came out of a discussion on the ARM boot-architecture
list[1] about DT forwards and backwards compatibility issues. There are
issues with newer DTs breaking on older, stable kernels. Some of these
are difficult to solve, but cases of optional devices not having
kernel support should be solvable.

I tested this on a RPi3 B with the pinctrl driver forced off. With this
change, the MMC/SD and UART drivers can function without the pinctrl
driver. I left the dts change out this time.

v2 and v3 of this series can be found here[2][3].

Rob

[1] https://lists.linaro.org/pipermail/boot-architecture/2018-April/000466.html
[2] https://lore.kernel.org/patchwork/project/lkml/list/?series=347413
[3] https://lore.kernel.org/patchwork/project/lkml/list/?series=357344

Rob Herring (6):
driver core: allow stopping deferred probe after init
dt-bindings: pinctrl: add a 'pinctrl-use-default' property
pinctrl: Support stopping deferred probe after initcalls
iommu: Stop deferring probe at end of initcalls
iommu: Remove IOMMU_OF_DECLARE
PM / Domains: Stop deferring probe at the end of initcall

.../admin-guide/kernel-parameters.txt | 9 +++
.../bindings/pinctrl/pinctrl-bindings.txt | 6 ++
drivers/base/dd.c | 59 +++++++++++++++++++
drivers/base/power/domain.c | 2 +-
drivers/iommu/arm-smmu-v3.c | 2 -
drivers/iommu/arm-smmu.c | 7 ---
drivers/iommu/exynos-iommu.c | 2 -
drivers/iommu/ipmmu-vmsa.c | 3 -
drivers/iommu/msm_iommu.c | 2 -
drivers/iommu/of_iommu.c | 21 +------
drivers/iommu/qcom_iommu.c | 2 -
drivers/iommu/rockchip-iommu.c | 2 -
drivers/pinctrl/devicetree.c | 15 +++--
include/asm-generic/vmlinux.lds.h | 2 -
include/linux/device.h | 2 +
include/linux/of_iommu.h | 4 --
16 files changed, 90 insertions(+), 50 deletions(-)

--
2.17.1

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