[PATCH v12 05/10] PCI: brcmstb: Add bcm7278 PERST# support

Rob Herring robh at kernel.org
Wed Sep 16 11:24:38 EDT 2020

On Fri, Sep 11, 2020 at 01:52:25PM -0400, Jim Quinlan wrote:
> From: Jim Quinlan <jquinlan at broadcom.com>
> The PERST# bit was moved to a different register in 7278-type STB chips.
> In addition, the polarity of the bit was also changed; for other chips
> writing a 1 specified assert; for 7278-type chips, writing a 0 specifies
> assert.  Of course, PERST# is a PCIe asserted-low signal.
> While we are here, also change the bridge_sw_init_set() functions so like
> the perst_set() functions they are chip specific and we no longer rely on
> data wrt chip specific field mask and shift values.
> Signed-off-by: Jim Quinlan <jquinlan at broadcom.com>
> Acked-by: Florian Fainelli <f.fainelli at gmail.com>
> ---
>  drivers/pci/controller/pcie-brcmstb.c | 97 +++++++++++++++++++--------
>  1 file changed, 69 insertions(+), 28 deletions(-)

Reviewed-by: Rob Herring <robh at kernel.org>

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