From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cyF9G-0001aq-BP for barebox@lists.infradead.org; Wed, 12 Apr 2017 10:05:16 +0000 Date: Wed, 12 Apr 2017 12:04:48 +0200 From: Sascha Hauer Message-ID: <20170412100448.ivecuii233vzxitn@pengutronix.de> References: <20170410175559.29476-1-m.grzeschik@pengutronix.de> <20170411083540.fqr4nnxqlh6thbib@pengutronix.de> <20170412083232.lnqk7bn5h2tk64lo@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20170412083232.lnqk7bn5h2tk64lo@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] ARM: i.MX6: add Technexion Pico Hobbit support To: Michael Grzeschik Cc: barebox@lists.infradead.org On Wed, Apr 12, 2017 at 10:32:32AM +0200, Michael Grzeschik wrote: > On Tue, Apr 11, 2017 at 10:35:40AM +0200, Sascha Hauer wrote: > > On Mon, Apr 10, 2017 at 07:55:59PM +0200, Michael Grzeschik wrote: > > > This adds support support for the i.MX6UL Technexion Pico Hobbit. > > > The board comes with different amounts of RAM. We create one image > > > for the 256MB and one for the 512MB variant. > > > > > > Signed-off-by: Michael Grzeschik > > > --- > > > arch/arm/boards/Makefile | 1 + > > > arch/arm/boards/technexion-pico-hobbit/Makefile | 7 ++ > > > arch/arm/boards/technexion-pico-hobbit/board.c | 105 +++++++++++++++++++++ > > > .../defaultenv-pico-hobbit/init/automount | 11 +++ > > > .../defaultenv-pico-hobbit/network/eth1 | 18 ++++ > > > .../flash-header-imx6ul-pico-hobbit-256.imxcfg | 64 +++++++++++++ > > > .../flash-header-imx6ul-pico-hobbit-512.imxcfg | 65 +++++++++++++ > > > arch/arm/boards/technexion-pico-hobbit/lowlevel.c | 78 +++++++++++++++ > > > arch/arm/configs/imx_v7_defconfig | 1 + > > > arch/arm/dts/Makefile | 1 + > > > arch/arm/dts/imx6ul-pico-hobbit.dts | 27 ++++++ > > > arch/arm/mach-imx/Kconfig | 6 ++ > > > images/Makefile.imx | 10 ++ > > > 13 files changed, 394 insertions(+) > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/Makefile > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/board.c > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/defaultenv-pico-hobbit/init/automount > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/defaultenv-pico-hobbit/network/eth1 > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/flash-header-imx6ul-pico-hobbit-256.imxcfg > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/flash-header-imx6ul-pico-hobbit-512.imxcfg > > > create mode 100644 arch/arm/boards/technexion-pico-hobbit/lowlevel.c > > > create mode 100644 arch/arm/dts/imx6ul-pico-hobbit.dts > > > > > > diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile > > > index 250ccb8889..d9f9d7778e 100644 > > > --- a/arch/arm/boards/Makefile > > > +++ b/arch/arm/boards/Makefile > > > @@ -114,6 +114,7 @@ obj-$(CONFIG_MACH_SOCFPGA_TERASIC_DE0_NANO_SOC) += terasic-de0-nano-soc/ > > > obj-$(CONFIG_MACH_SOCFPGA_TERASIC_SOCKIT) += terasic-sockit/ > > > obj-$(CONFIG_MACH_SOLIDRUN_CUBOX) += solidrun-cubox/ > > > obj-$(CONFIG_MACH_SOLIDRUN_MICROSOM) += solidrun-microsom/ > > > +obj-$(CONFIG_MACH_TECHNEXION_PICO_HOBBIT) += technexion-pico-hobbit/ > > > obj-$(CONFIG_MACH_TECHNEXION_WANDBOARD) += technexion-wandboard/ > > > obj-$(CONFIG_MACH_TNY_A9260) += tny-a926x/ > > > obj-$(CONFIG_MACH_TNY_A9263) += tny-a926x/ > > > diff --git a/arch/arm/boards/technexion-pico-hobbit/Makefile b/arch/arm/boards/technexion-pico-hobbit/Makefile > > > new file mode 100644 > > > index 0000000000..b60dcd2bc1 > > > --- /dev/null > > > +++ b/arch/arm/boards/technexion-pico-hobbit/Makefile > > > @@ -0,0 +1,7 @@ > > > +obj-y += board.o > > > +lwl-y += lowlevel.o > > > +extra-y += flash-header-imx6ul-pico-hobbit-256.dcd.S \ > > > + flash-header-imx6ul-pico-hobbit-256.dcd \ > > > + flash-header-imx6ul-pico-hobbit-512.dcd.S \ > > > + flash-header-imx6ul-pico-hobbit-512.dcd > > > +bbenv-y += defaultenv-pico-hobbit > > > diff --git a/arch/arm/boards/technexion-pico-hobbit/board.c b/arch/arm/boards/technexion-pico-hobbit/board.c > > > new file mode 100644 > > > index 0000000000..40b49de669 > > > --- /dev/null > > > +++ b/arch/arm/boards/technexion-pico-hobbit/board.c > > > @@ -0,0 +1,105 @@ > > > +/* > > > + * Copyright (C) 2017 Michael Grzeschik, Pengutronix > > > + * > > > + * This program is free software; you can redistribute it and/or > > > + * modify it under the terms of the GNU General Public License as > > > + * published by the Free Software Foundation; either version 2 of > > > + * the License, or (at your option) any later version. > > > + * > > > + * This program is distributed in the hope that it will be useful, > > > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > > > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > > > + * GNU General Public License for more details. > > > + * > > > + * You should have received a copy of the GNU General Public License > > > + * along with this program; if not, write to the Free Software > > > + * Foundation. > > > + * > > > + */ > > > + > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > +#include > > > + > > > +#include > > > +#include > > > + > > > +static int ksz8081_phy_fixup(struct phy_device *dev) > > > +{ > > > + phy_write(dev, 0x1f, 0x8190); > > > + phy_write(dev, 0x16, 0x202); > > > + > > > + return 0; > > > +} > > > + > > > +static int imx6ul_setup_fec(void) > > > +{ > > > + void __iomem *gprbase = IOMEM(MX6_IOMUXC_BASE_ADDR) + 0x4000; > > > + uint32_t val; > > > + struct clk *clk; > > > + > > > + phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK, > > > + ksz8081_phy_fixup); > > > + > > > + clk = clk_lookup("enet_ptp"); > > > + if (IS_ERR(clk)) > > > + goto err; > > > + > > > + clk_enable(clk); > > > + > > > + clk = clk_lookup("enet_ref"); > > > + if (IS_ERR(clk)) > > > + goto err; > > > + clk_enable(clk); > > > + > > > + clk = clk_lookup("enet_ref_125m"); > > > + if (IS_ERR(clk)) > > > + goto err; > > > + > > > + clk_enable(clk); > > > + > > > + val = readl(gprbase + IOMUXC_GPR1); > > > + /* Use 50M anatop loopback REF_CLK1 for ENET1, clear gpr1[13], set gpr1[17]*/ > > > + val &= ~(1 << 13); > > > + val |= (1 << 17); > > > + /* Use 50M anatop loopback REF_CLK1 for ENET2, clear gpr1[14], set gpr1[18]*/ > > > + val &= ~(1 << 14); > > > + val |= (1 << 18); > > > + writel(val, gprbase + IOMUXC_GPR1); > > > + > > > + return 0; > > > +err: > > > + pr_err("Setting up DFEC\n"); > > > + > > > + return -EIO; > > > +} > > > > Since this is an exact copy of imx6ul_setup_fec() in > > arch/arm/boards/phytec-som-imx6/board.c we should see what we can do > > better. > > > > I can imagine that the clocks should be enabled by the fec driver, maybe > > they are even enabled already there. > > Yes, you are right. The imx6ul is already enabling them: > > clocks = <&clks IMX6UL_CLK_ENET>, > <&clks IMX6UL_CLK_ENET_AHB>, > <&clks IMX6UL_CLK_ENET_PTP>, > <&clks IMX6UL_CLK_ENET2_REF_125M>, > <&clks IMX6UL_CLK_ENET2_REF_125M>; > clock-names = "ipg", "ahb", "ptp", > "enet_clk_ref", "enet_out"; > > > For the GPR setting: Maybe we should create a imx6ul_setup_fec() in > > arch/arm/mach-imx which for now just hardcodes this setting so we can > > extend this later. > > What do you mean with hardcoding? I thought of a helper function every board > who needs it can call. That's what I meant, yes. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox