Date: Mon, 12 Apr 2021 08:14:21 -0600 From: Ian Lepore <ian@freebsd.org> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: "freebsd-arm@FreeBSD.org" <freebsd-arm@FreeBSD.org> Subject: Re: No dwc0 on bananapi m1 with Linux 5.10 devicetree Message-ID: <2d946b70e771c42ebd21c9b1b224b9c3ac39dcc2.camel@freebsd.org> In-Reply-To: <20210412131422.68ebcd1dd748c17f2d57efb1@bidouilliste.com> References: <1sKA_1f0z4MvqNKPTG1kiNCHauRdILGumygIn6w0H-XBzxg_cTV0c-01SCnrUcmzy96RCoE2zA4khWzwo6DQQymVphL7zpjOVx5c48lXAXU=@protonmail.com> <20210411213728.7a53a7a91c2aa3c930f5abc6@bidouilliste.com> <b6a9fab3914a54d0a78cf5e80a7bd9dc07807b60.camel@freebsd.org> <20210412131422.68ebcd1dd748c17f2d57efb1@bidouilliste.com>
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On Mon, 2021-04-12 at 13:14 +0200, Emmanuel Vadot wrote:
> On Sun, 11 Apr 2021 17:06:02 -0600
> Ian Lepore <ian@freebsd.org> wrote:
>
> > On Sun, 2021-04-11 at 21:37 +0200, Emmanuel Vadot wrote:
> > > [...]
>
> Thanks, I didn't knew about those helpers.
> New patch inline, only build tested.
>
> From e1f901a3dce3df965a3955ae1341ba809aa28394 Mon Sep 17 00:00:00
> 2001
> From: Emmanuel Vadot <manu@FreeBSD.org>
> Date: Sun, 11 Apr 2021 21:34:57 +0200
> Subject: [PATCH] dwc: Use mii_fdt function
>
> Use the helper function to get phy mode and configure dwc
> accordingly.
> ---
> sys/dev/dwc/if_dwc.c | 15 ++++++++++-----
> 1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/sys/dev/dwc/if_dwc.c b/sys/dev/dwc/if_dwc.c
> index 776d0d0dc39..563769f8406 100644
> --- a/sys/dev/dwc/if_dwc.c
> +++ b/sys/dev/dwc/if_dwc.c
> @@ -69,6 +69,7 @@ __FBSDID("$FreeBSD$");
> #include <dev/mii/miivar.h>
> #include <dev/ofw/ofw_bus.h>
> #include <dev/ofw/ofw_bus_subr.h>
> +#include <dev/mii/mii_fdt.h>
>
> #ifdef EXT_RESOURCES
> #include <dev/extres/clk/clk.h>
> @@ -1559,7 +1560,6 @@ dwc_attach(device_t dev)
> struct ifnet *ifp;
> int error, i;
> uint32_t reg;
> - char *phy_mode;
> phandle_t node;
> uint32_t txpbl, rxpbl, pbl;
> bool nopblx8 = false;
> @@ -1574,12 +1574,17 @@ dwc_attach(device_t dev)
> sc->mactype = IF_DWC_MAC_TYPE(dev);
>
> node = ofw_bus_get_node(dev);
> - if (OF_getprop_alloc(node, "phy-mode", (void **)&phy_mode)) {
> - if (strcmp(phy_mode, "rgmii") == 0)
> + switch (mii_fdt_get_contype(node)) {
> + case MII_CONTYPE_RGMII:
> + case MII_CONTYPE_RGMII_ID:
I think you should list all four RGMII values here; some day another
board may come along that uses one of them.
> sc->phy_mode = PHY_MODE_RGMII;
> - if (strcmp(phy_mode, "rmii") == 0)
> + break;
> + case MII_CONTYPE_RMII:
> sc->phy_mode = PHY_MODE_RMII;
> - OF_prop_free(phy_mode);
> + break;
> + default:
> + device_printf(dev, "Unsupported MII type\n");
> + return (ENXIO);
> }
>
> if (OF_getencprop(node, "snps,pbl", &pbl, sizeof(uint32_t)) <=
> 0)
> --
> 2.31.1
>
-- Ian
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