From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vaibhav Hiremath Subject: Re: [PATCH v2 3/3] usb: musb: omap: Add device tree support for omap musb glue Date: Tue, 11 Sep 2012 15:23:55 +0530 Message-ID: <504F0A33.9060606@ti.com> References: <1347354580-5895-1-git-send-email-kishon@ti.com> <1347354580-5895-4-git-send-email-kishon@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1347354580-5895-4-git-send-email-kishon-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" To: Kishon Vijay Abraham I Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org, balbi-l0cyMroinI0@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-omap@vger.kernel.org On 9/11/2012 2:39 PM, Kishon Vijay Abraham I wrote: > Added device tree support for omap musb driver and updated the > Documentation with device tree binding information. > > Signed-off-by: Kishon Vijay Abraham I > --- > Documentation/devicetree/bindings/usb/omap-usb.txt | 33 ++++++++++++ > drivers/usb/musb/omap2430.c | 54 ++++++++++++++++++++ > 2 files changed, 87 insertions(+) > create mode 100644 Documentation/devicetree/bindings/usb/omap-usb.txt > > diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt > new file mode 100644 > index 0000000..29a043e > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt > @@ -0,0 +1,33 @@ > +OMAP GLUE > + > +OMAP MUSB GLUE > + - compatible : Should be "ti,omap4-musb" or "ti,omap3-musb" > + - ti,hwmods : must be "usb_otg_hs" > + - multipoint : Should be "1" indicating the musb controller supports > + multipoint. This is a MUSB configuration-specific setting. > + - num_eps : Specifies the number of endpoints. This is also a > + MUSB configuration-specific setting. Should be set to "16" > + - ram_bits : Specifies the ram address size. Should be set to "12" > + - interface_type : This is a board specific setting to describe the type of > + interface between the controller and the phy. It should be "0" or "1" > + specifying ULPI and UTMI respectively. > + - mode : Should be "3" to represent OTG. "1" signifies HOST and "2" > + represents PERIPHERAL. > + - power : Should be "50". This signifies the controller can supply upto > + 100mA when operating in host mode. > + > +SOC specific device node entry > +usb_otg_hs: usb_otg_hs@4a0ab000 { > + compatible = "ti,omap4-musb"; > + ti,hwmods = "usb_otg_hs"; > + multipoint = <1>; > + num_eps = <16>; > + ram_bits = <12>; > +}; reg and interrupt properties are missing here. I would encourage to specify "reg" and "interrupt" properties in every node getting newly added to the OMAP DTS files. Thanks, Vaibhav > + > +Board specific device node entry > +&usb_otg_hs { > + interface_type = <1>; > + mode = <3>; > + power = <50>; > +}; > diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c > index f4d9503..d96873b 100644 > --- a/drivers/usb/musb/omap2430.c > +++ b/drivers/usb/musb/omap2430.c > @@ -30,6 +30,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -470,8 +471,11 @@ static u64 omap2430_dmamask = DMA_BIT_MASK(32); > static int __devinit omap2430_probe(struct platform_device *pdev) > { > struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; > + struct omap_musb_board_data *data; > struct platform_device *musb; > struct omap2430_glue *glue; > + struct device_node *np = pdev->dev.of_node; > + struct musb_hdrc_config *config; > struct resource *res; > int ret = -ENOMEM; > > @@ -501,6 +505,42 @@ static int __devinit omap2430_probe(struct platform_device *pdev) > if (glue->control_otghs == NULL) > dev_dbg(&pdev->dev, "Failed to obtain control memory\n"); > > + if (np) { > + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); > + if (!pdata) { > + dev_err(&pdev->dev, > + "failed to allocate musb platfrom data\n"); > + ret = -ENOMEM; > + goto err1; > + } > + > + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); > + if (!data) { > + dev_err(&pdev->dev, > + "failed to allocate musb board data\n"); > + ret = -ENOMEM; > + goto err1; > + } > + > + config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); > + if (!data) { > + dev_err(&pdev->dev, > + "failed to allocate musb hdrc config\n"); > + goto err1; > + } > + > + of_property_read_u32(np, "mode", (u32 *)&pdata->mode); > + of_property_read_u32(np, "interface_type", > + (u32 *)&data->interface_type); > + of_property_read_u32(np, "num_eps", (u32 *)&config->num_eps); > + of_property_read_u32(np, "ram_bits", (u32 *)&config->ram_bits); > + of_property_read_u32(np, "power", (u32 *)&pdata->power); > + config->multipoint = of_property_read_bool(np, "multipoint"); > + > + pdata->board_data = data; > + pdata->config = config; > + } > + > pdata->platform_ops = &omap2430_ops; > > platform_set_drvdata(pdev, glue); > @@ -597,12 +637,26 @@ static struct dev_pm_ops omap2430_pm_ops = { > #define DEV_PM_OPS NULL > #endif > > +#ifdef CONFIG_OF > +static const struct of_device_id omap2430_id_table[] = { > + { > + .compatible = "ti,omap4-musb" > + }, > + { > + .compatible = "ti,omap3-musb" > + }, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, omap2430_id_table); > +#endif > + > static struct platform_driver omap2430_driver = { > .probe = omap2430_probe, > .remove = __devexit_p(omap2430_remove), > .driver = { > .name = "musb-omap2430", > .pm = DEV_PM_OPS, > + .of_match_table = of_match_ptr(omap2430_id_table), > }, > }; > >