[PATCH v7 1/4] ARM: davinci: da8xx: Add USB PHY platform declaration
Sekhar Nori
nsekhar at ti.com
Mon Oct 31 04:54:24 PDT 2016
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 at 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 at 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 at lechnology.com>
[nsekhar at ti.com: keep usb-davinci.h included in board-da830-evm.c
minor subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar at 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 --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 = {
--
2.9.0
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