[PATCH 0/2] mmc: sdhci-pci: Use ACPI to set max frequency of sdio host

From: Zach Brown
Date: Mon Nov 21 2016 - 18:04:36 EST

On some boards, max SDIO frequency is limited by trace lengths and other layout
choices. We would like a way to specify this limitation so the driver can
behave accordingly.

This patch set assumes that the limitation has been reported in an ACPI table
which the driver can check to get the max frequency.

The first patch creates a PCI ID and support for the Intel byt sdio where NI is
the subvendor.

The second patch uses the ACPI table to set f_max during the new

Zach Brown (2):
mmc: sdhci-pci: Add PCI ID for Intel byt sdio host controller
sub-vended by NI
mmc: sdhci-pci: Use ACPI to get max frequency for Intel byt sdio
controller sub-vended by NI

drivers/mmc/host/sdhci-pci-core.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)