diff mbox

[v7,1/4] ARM: davinci: da8xx: Add USB PHY platform declaration

Message ID 645a6e25-4231-ce35-4344-1551e5ecb70f@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sekhar Nori Oct. 31, 2016, 11:54 a.m. UTC 
On Thursday 27 October 2016 05:48 AM, David Lechner wrote:
> There is now a proper phy driver for the DA8xx SoC USB PHY. This adds the
> platform device declarations needed to use it.
> 
> Signed-off-by: David Lechner <david@lechnology.com>
> ---
> 
> Updated this patch so that it applies/builds cleanly before "ARM: davinci:
> da8xx: add usb phy clocks" since that patch now uses da8xx_usb_phy from this
> patch.
> 
> 
>  arch/arm/mach-davinci/board-da830-evm.c     | 22 +++++++---------------
>  arch/arm/mach-davinci/board-omapl138-hawk.c |  5 +++++
>  arch/arm/mach-davinci/include/mach/da8xx.h  |  1 +
>  arch/arm/mach-davinci/usb-da8xx.c           | 11 +++++++++++
>  4 files changed, 24 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
> index 2a96b40..829f68d 100644
> --- a/arch/arm/mach-davinci/board-da830-evm.c
> +++ b/arch/arm/mach-davinci/board-da830-evm.c
> @@ -26,7 +26,6 @@
>  #include <linux/platform_data/mtd-davinci.h>
>  #include <linux/platform_data/mtd-davinci-aemif.h>
>  #include <linux/platform_data/spi-davinci.h>
> -#include <linux/platform_data/usb-davinci.h>

I applied this patch, but did not drop this include. usb-davinci.h 
provides the definition of da8xx_ohci_root_hub which is still used in 
this file. I guess it did not lead to a build error because the file is 
still getting included indirectly. But I rather prefer a direct include 
of this file.

Attached is the patch I applied for reference.

Thanks,
Sekhar

---8<---
From 00e69229147533769df8637ff4d4bb098150e325 Mon Sep 17 00:00:00 2001
From: David Lechner <david@lechnology.com>
Date: Wed, 26 Oct 2016 19:18:15 -0500
Subject: [PATCH] ARM: davinci: da8xx: Add USB PHY platform device

There is now a proper phy driver for the DA8xx SoC USB PHY. This adds the
platform device declarations needed to use it.

Signed-off-by: David Lechner <david@lechnology.com>
[nsekhar@ti.com: keep usb-davinci.h included in board-da830-evm.c
		 minor subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
---
 arch/arm/mach-davinci/board-da830-evm.c     | 21 +++++++--------------
 arch/arm/mach-davinci/board-omapl138-hawk.c |  5 +++++
 arch/arm/mach-davinci/include/mach/da8xx.h  |  1 +
 arch/arm/mach-davinci/usb-da8xx.c           | 11 +++++++++++
 4 files changed, 24 insertions(+), 14 deletions(-)
diff mbox

Patch

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 6001b32305ec..53172add5248 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -112,7 +112,7 @@  static __init void da830_evm_usb_init(void)
 	int ret;
 
 	/*
-	 * Set up USB clock/mode in the CFGCHIP2 register.
+	 * Set up USB clock in the CFGCHIP2 register.
 	 * FYI:  CFGCHIP2 is 0x0000ef00 initially.
 	 */
 	cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
@@ -129,22 +129,15 @@  static __init void da830_evm_usb_init(void)
 	cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
 	cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
 
-	/*
-	 * We have to override VBUS/ID signals when MUSB is configured into the
-	 * host-only mode -- ID pin will float if no cable is connected, so the
-	 * controller won't be able to drive VBUS thinking that it's a B-device.
-	 * Otherwise, we want to use the OTG mode and enable VBUS comparators.
-	 */
-	cfgchip2 &= ~CFGCHIP2_OTGMODE_MASK;
-#ifdef	CONFIG_USB_MUSB_HOST
-	cfgchip2 |=  CFGCHIP2_FORCE_HOST;
-#else
-	cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
-#endif
-
 	__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
 	/* USB_REFCLKIN is not used. */
+
+	ret = da8xx_register_usb_phy();
+	if (ret)
+		pr_warn("%s: USB PHY registration failed: %d\n",
+			__func__, ret);
+
 	ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
 	if (ret)
 		pr_warn("%s: USB 2.0 PinMux setup failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 70ed5ef2ef8c..67477ca4f15a 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -260,6 +260,11 @@  static __init void omapl138_hawk_usb_init(void)
 	cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
 	__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
 
+	ret = da8xx_register_usb_phy();
+	if (ret)
+		pr_warn("%s: USB PHY registration failed: %d\n",
+			__func__, ret);
+
 	ret = gpio_request_one(DA850_USB1_VBUS_PIN,
 			GPIOF_DIR_OUT, "USB1 VBUS");
 	if (ret < 0) {
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 2f6fe2f0c733..5e07d06f60e4 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -89,6 +89,7 @@  int da850_register_edma(struct edma_rsv_info *rsv[2]);
 int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
 int da8xx_register_spi_bus(int instance, unsigned num_chipselect);
 int da8xx_register_watchdog(void);
+int da8xx_register_usb_phy(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);
 int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
 int da8xx_register_emac(void);
diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c
index f141f5171906..4bb190380060 100644
--- a/arch/arm/mach-davinci/usb-da8xx.c
+++ b/arch/arm/mach-davinci/usb-da8xx.c
@@ -3,6 +3,7 @@ 
  */
 #include <linux/dma-mapping.h>
 #include <linux/init.h>
+#include <linux/phy/phy.h>
 #include <linux/platform_data/usb-davinci.h>
 #include <linux/platform_device.h>
 #include <linux/usb/musb.h>
@@ -15,6 +16,16 @@ 
 #define DA8XX_USB0_BASE		0x01e00000
 #define DA8XX_USB1_BASE		0x01e25000
 
+static struct platform_device da8xx_usb_phy = {
+	.name		= "da8xx-usb-phy",
+	.id		= -1,
+};
+
+int __init da8xx_register_usb_phy(void)
+{
+	return platform_device_register(&da8xx_usb_phy);
+}
+
 #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
 
 static struct musb_hdrc_config musb_config = {