linux-kernel - Re: [PATCH v12 05/10] PCI: brcmstb: Add bcm7278 PERST# support

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Date:   Wed, 16 Sep 2020 09:24:38 -0600
From:   Rob Herring <robh@...nel.org>
To:     Jim Quinlan <james.quinlan@...adcom.com>
Cc:     linux-pci@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Christoph Hellwig <hch@....de>,
        Robin Murphy <robin.murphy@....com>,
        bcm-kernel-feedback-list@...adcom.com,
        Jim Quinlan <jquinlan@...adcom.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@...ts.infradead.org>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v12 05/10] PCI: brcmstb: Add bcm7278 PERST# support

On Fri, Sep 11, 2020 at 01:52:25PM -0400, Jim Quinlan wrote:
> From: Jim Quinlan <jquinlan@...adcom.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@...adcom.com>
> Acked-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  drivers/pci/controller/pcie-brcmstb.c | 97 +++++++++++++++++++--------
>  1 file changed, 69 insertions(+), 28 deletions(-)

Reviewed-by: Rob Herring <robh@...nel.org>