linux-kernel - [PATCH v2] ARM: imx: Drop imx_anatop_usb_chrg_detect

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Message-Id: <20191022041445.23897-1-andrew.smirnov@gmail.com>
Date:   Mon, 21 Oct 2019 21:14:45 -0700
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Chris Healy <cphealy@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Peter Chen <peter.chen@....com>, linux-imx@....com,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] ARM: imx: Drop imx_anatop_usb_chrg_detect_disable()

With commit b5bbe2235361 ("usb: phy: mxs: Disable external charger
detect in mxs_phy_hw_init()") in tree all of the necessary charger
setup is done by the USB PHY driver which covers all of the affected
i.MX6 SoCs.

NOTE: imx_anatop_usb_chrg_detect_disable() was also called for i.MX7D,
but looking at its datasheet it appears to have a different USB PHY IP
block, so executing i.MX6 charger disable configuration seems
unnecessary.

Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: Chris Healy <cphealy@...il.com>
Cc: Shawn Guo <shawnguo@...nel.org>
Cc: Fabio Estevam <festevam@...il.com>
Cc: Peter Chen <peter.chen@....com>
Cc: linux-imx@....com
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---

Changes since [v1]:

    - Scope of the patch reduced to remove only
      imx_anatop_usb_chrg_detect_disable() instead of
      imx_anatop_init()

[v1] lore.kernel.org/lkml/20190731180131.8597-1-andrew.smirnov@...il.com

 arch/arm/mach-imx/anatop.c | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
index 777d8c255501..8fb68c0ec34c 100644
--- a/arch/arm/mach-imx/anatop.c
+++ b/arch/arm/mach-imx/anatop.c
@@ -19,8 +19,6 @@
 #define ANADIG_REG_2P5		0x130
 #define ANADIG_REG_CORE		0x140
 #define ANADIG_ANA_MISC0	0x150
-#define ANADIG_USB1_CHRG_DETECT	0x1b0
-#define ANADIG_USB2_CHRG_DETECT	0x210
 #define ANADIG_DIGPROG		0x260
 #define ANADIG_DIGPROG_IMX6SL	0x280
 #define ANADIG_DIGPROG_IMX7D	0x800
@@ -33,8 +31,6 @@
 #define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG	0x1000
 /* Below MISC0_DISCON_HIGH_SNVS is only for i.MX6SL */
 #define BM_ANADIG_ANA_MISC0_DISCON_HIGH_SNVS	0x2000
-#define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B	0x80000
-#define BM_ANADIG_USB_CHRG_DETECT_EN_B		0x100000
 
 static struct regmap *anatop;
 
@@ -96,16 +92,6 @@ void imx_anatop_post_resume(void)
 
 }
 
-static void imx_anatop_usb_chrg_detect_disable(void)
-{
-	regmap_write(anatop, ANADIG_USB1_CHRG_DETECT,
-		BM_ANADIG_USB_CHRG_DETECT_EN_B
-		| BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
-	regmap_write(anatop, ANADIG_USB2_CHRG_DETECT,
-		BM_ANADIG_USB_CHRG_DETECT_EN_B |
-		BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
-}
-
 void __init imx_init_revision_from_anatop(void)
 {
 	struct device_node *np;
@@ -171,10 +157,6 @@ void __init imx_init_revision_from_anatop(void)
 void __init imx_anatop_init(void)
 {
 	anatop = syscon_regmap_lookup_by_compatible("fsl,imx6q-anatop");
-	if (IS_ERR(anatop)) {
+	if (IS_ERR(anatop))
 		pr_err("%s: failed to find imx6q-anatop regmap!\n", __func__);
-		return;
-	}
-
-	imx_anatop_usb_chrg_detect_disable();
 }
-- 
2.21.0