From: Peter Chen <hzpeterchen@gmail.com>
To: Stephen Boyd <stephen.boyd@linaro.org>
Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Andy Gross <andy.gross@linaro.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Neil Armstrong <narmstrong@baylibre.com>,
Arnd Bergmann <arnd@arndb.de>, Felipe Balbi <balbi@kernel.org>,
Peter Chen <peter.chen@nxp.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v2 15/22] usb: chipidea: msm: Mux over secondary phy at the right time
Date: Mon, 11 Jul 2016 12:43:27 +0800 [thread overview]
Message-ID: <20160711044327.GG30448@shlinux2> (raw)
In-Reply-To: <20160707222114.1673-16-stephen.boyd@linaro.org>
On Thu, Jul 07, 2016 at 03:21:06PM -0700, Stephen Boyd wrote:
> We need to pick the correct phy at runtime based on how the SoC
> has been wired onto the board. If the secondary phy is used, take
> it out of reset and mux over to it by writing into the TCSR
> register. Make sure to do this on reset too, because this
> register is reset to the default value (primary phy) after the
> RESET bit is set in USBCMD.
>
> Cc: Peter Chen <peter.chen@nxp.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
> ---
> drivers/usb/chipidea/ci_hdrc_msm.c | 67 +++++++++++++++++++++++++++++++++++---
> 1 file changed, 62 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
> index 7e870a253f55..7708bee3ff3e 100644
> --- a/drivers/usb/chipidea/ci_hdrc_msm.c
> +++ b/drivers/usb/chipidea/ci_hdrc_msm.c
> @@ -8,29 +8,44 @@
> #include <linux/module.h>
> #include <linux/platform_device.h>
> #include <linux/pm_runtime.h>
> -#include <linux/usb/gadget.h>
> #include <linux/usb/chipidea.h>
> #include <linux/clk.h>
> #include <linux/reset.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/regmap.h>
> +#include <linux/io.h>
>
> #include "ci.h"
>
> #define HS_PHY_AHB_MODE 0x0098
>
> +/* Vendor base starts at 0x200 beyond CI base */
> +#define HS_PHY_SEC_CTRL 0x0078
> +#define HS_PHY_DIG_CLAMP_N BIT(16)
> +
Keep alignment
> struct ci_hdrc_msm {
> struct platform_device *ci;
> struct clk *core_clk;
> struct clk *iface_clk;
> struct clk *fs_clk;
> + bool secondary_phy;
> + void __iomem *base;
> };
>
> static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
> {
> - struct device *dev = ci->gadget.dev.parent;
> + struct device *dev = ci->dev->parent;
> + struct ci_hdrc_msm *msm_ci = dev_get_drvdata(dev);
>
> switch (event) {
> case CI_HDRC_CONTROLLER_RESET_EVENT:
> dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
> + if (msm_ci->secondary_phy) {
> + u32 val = readl_relaxed(msm_ci->base + HS_PHY_SEC_CTRL);
> + val |= HS_PHY_DIG_CLAMP_N;
> + writel_relaxed(val, msm_ci->base + HS_PHY_SEC_CTRL);
> + }
> +
> /* use AHB transactor, allow posted data writes */
> hw_write_id_reg(ci, HS_PHY_AHB_MODE, 0xffffffff, 0x8);
> usb_phy_init(ci->usb_phy);
> @@ -59,6 +74,39 @@ static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
> .notify_event = ci_hdrc_msm_notify_event,
> };
>
> +static int ci_hdrc_msm_mux_phy(struct ci_hdrc_msm *ci,
> + struct platform_device *pdev)
> +{
> + struct regmap *regmap;
> + struct device *dev = &pdev->dev;
> + struct of_phandle_args args;
> + u32 val;
> + int ret;
> +
> + ret = of_parse_phandle_with_fixed_args(dev->of_node, "phy-select", 2, 0,
> + &args);
> + if (ret)
> + return 0;
> +
> + regmap = syscon_node_to_regmap(args.np);
> + of_node_put(args.np);
> + if (IS_ERR(regmap))
> + return PTR_ERR(regmap);
> +
> + ret = regmap_write(regmap, args.args[0], args.args[1]);
> + if (ret)
> + return ret;
> +
> + ci->secondary_phy = !!args.args[1];
> + if (ci->secondary_phy) {
> + val = readl_relaxed(ci->base + HS_PHY_SEC_CTRL);
> + val |= HS_PHY_DIG_CLAMP_N;
> + writel_relaxed(val, ci->base + HS_PHY_SEC_CTRL);
> + }
> +
> + return 0;
> +}
> +
> static int ci_hdrc_msm_probe(struct platform_device *pdev)
> {
> struct ci_hdrc_msm *ci;
> @@ -66,6 +114,7 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
> struct usb_phy *phy;
> struct clk *clk;
> struct reset_control *reset;
> + struct resource *res;
> int ret;
>
> dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
> @@ -105,6 +154,11 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
> ci->fs_clk = NULL;
> }
>
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> + ci->base = devm_ioremap_resource(&pdev->dev, res);
> + if (!ci->base)
> + return -ENOMEM;
> +
> ret = clk_prepare_enable(ci->fs_clk);
> if (ret)
> return ret;
> @@ -123,9 +177,12 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
> if (ret)
> goto err_iface;
>
> - plat_ci = ci_hdrc_add_device(&pdev->dev,
> - pdev->resource, pdev->num_resources,
> - &ci_hdrc_msm_platdata);
> + ret = ci_hdrc_msm_mux_phy(ci, pdev);
> + if (ret)
> + goto err_mux;
> +
> + plat_ci = ci_hdrc_add_device(&pdev->dev, pdev->resource,
> + pdev->num_resources, &ci_hdrc_msm_platdata);
The above line has not changed.
After fixing above, you can add my ack.
Acked-by: Peter Chen <peter.chen@nxp.com>
--
Best Regards,
Peter Chen
next prev parent reply other threads:[~2016-07-11 4:51 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 22:20 [PATCH v2 00/22] Support qcom's HSIC USB and rewrite USB2 HS phy support Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 01/22] of: device: Support loading a module with OF based modalias Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 02/22] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 03/22] usb: ulpi: Support device discovery via device properties Stephen Boyd
2016-07-08 9:04 ` Peter Chen
[not found] ` <147043245520.26915.14153612182716236022@sboyd-linaro>
2016-08-23 19:58 ` Stephen Boyd
2016-08-24 7:31 ` Heikki Krogerus
2016-07-18 2:23 ` Rob Herring
[not found] ` <147043320014.26915.7483025835695600714@sboyd-linaro>
2016-08-23 20:00 ` Stephen Boyd
2016-08-23 23:06 ` Rob Herring
2016-08-24 1:06 ` Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 04/22] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd
2016-07-08 9:14 ` Peter Chen
[not found] ` <147043329762.26915.1413688974325107381@sboyd-linaro>
2016-08-06 7:42 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 05/22] usb: chipidea: Handle extcon events properly Stephen Boyd
2016-07-07 22:20 ` [PATCH v2 06/22] usb: chipidea: Add platform flag for wrapper phy management Stephen Boyd
2016-07-08 9:25 ` Peter Chen
[not found] ` <147043356053.26915.10086819023294264100@sboyd-linaro>
2016-08-06 7:59 ` Peter Chen
[not found] ` <147069998158.10825.8595816732650723884@sboyd-linaro>
2016-08-09 0:36 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 07/22] usb: chipidea: Notify events when switching host mode Stephen Boyd
2016-07-08 9:29 ` Peter Chen
2016-07-07 22:20 ` [PATCH v2 08/22] usb: chipidea: Remove locking in ci_udc_start() Stephen Boyd
2016-07-08 9:45 ` Peter Chen
[not found] ` <147043403652.26915.10865210145828633146@sboyd-linaro>
2016-08-06 7:54 ` Peter Chen
[not found] ` <147070007426.10825.11324896309403492272@sboyd-linaro>
2016-08-09 0:42 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 09/22] usb: chipidea: Kick OTG state machine for AVVIS with vbus extcon Stephen Boyd
2016-07-11 2:25 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 10/22] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd
2016-07-11 3:10 ` Peter Chen
2016-07-11 22:02 ` Stephen Boyd
2016-07-07 22:21 ` [PATCH v2 11/22] usb: chipidea: msm: Mark device as runtime pm active Stephen Boyd
2016-07-11 3:19 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 12/22] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd
2016-07-11 3:24 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 13/22] usb: chipidea: msm: Use hw_write_id_reg() instead of writel Stephen Boyd
2016-07-07 22:21 ` [PATCH v2 14/22] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd
2016-07-11 4:32 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 15/22] usb: chipidea: msm: Mux over secondary phy at the right time Stephen Boyd
2016-07-11 4:43 ` Peter Chen [this message]
2016-07-11 22:03 ` Stephen Boyd
2016-07-12 1:07 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 16/22] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd
2016-07-11 5:24 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 17/22] usb: chipidea: msm: Make platform data driver local instead of global Stephen Boyd
2016-07-11 5:26 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 18/22] usb: chipidea: msm: Add reset controller for PHY POR bit Stephen Boyd
2016-07-11 5:32 ` Peter Chen
2016-07-11 22:07 ` Stephen Boyd
2016-07-12 1:09 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 19/22] usb: chipidea: msm: Handle phy power states Stephen Boyd
2016-07-11 5:38 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 20/22] usb: chipidea: msm: Be silent on probe defer errors Stephen Boyd
2016-07-11 5:39 ` Peter Chen
2016-07-07 22:21 ` [PATCH v2 21/22] phy: Add support for Qualcomm's USB HSIC phy Stephen Boyd
2016-07-18 2:27 ` Rob Herring
2016-07-07 22:21 ` [PATCH v2 22/22] phy: Add support for Qualcomm's USB HS phy Stephen Boyd
2016-07-18 2:28 ` Rob Herring
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