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Date: Wed, 22 Jun 2016 12:03:10 -0500
From: David Lechner <david@...hnology.com>
To: Sekhar Nori <nsekhar@...com>,
Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
khilman@...nel.org
Cc: petr@...ix.com, Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Kishon Vijay Abraham I <kishon@...com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Stern <stern@...land.harvard.edu>, Bin Liu <b-liu@...com>,
Lee Jones <lee.jones@...aro.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v5 2/5] ARM: davinci: da8xx: Add CFGCHIP syscon platform
declaration.
From b0ae5eeba849b49f82980218a374c6d3f06487b8 Mon Sep 17 00:00:00 2001
From: David Lechner <david@...hnology.com>
Date: Thu, 24 Mar 2016 01:38:54 -0500
Subject: [PATCH] ARM: davinci: da8xx: Add CFGCHIP syscon platform
declaration.
The CFGCHIP registers are used by a number of devices, so using a syscon
device to share them. The first consumer of this will by the phy-da8xx-usb
driver.
Signed-off-by: David Lechner <david@...hnology.com>
---
the id of syscon is changed from 0 to -1.
arch/arm/mach-davinci/board-da830-evm.c | 4 ++++
arch/arm/mach-davinci/board-da850-evm.c | 4 ++++
arch/arm/mach-davinci/board-mityomapl138.c | 4 ++++
arch/arm/mach-davinci/board-omapl138-hawk.c | 4 ++++
arch/arm/mach-davinci/devices-da8xx.c | 28
++++++++++++++++++++++++++++
arch/arm/mach-davinci/include/mach/da8xx.h | 2 ++
6 files changed, 46 insertions(+)
diff --git a/arch/arm/mach-davinci/board-da830-evm.c
b/arch/arm/mach-davinci/board-da830-evm.c
index 605d444..3051cb6 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -586,6 +586,10 @@ static __init void da830_evm_init(void)
struct davinci_soc_info *soc_info = &davinci_soc_info;
int ret;
+ ret = da8xx_register_cfgchip();
+ if (ret)
+ pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
+
ret = da830_register_gpio();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/board-da850-evm.c
b/arch/arm/mach-davinci/board-da850-evm.c
index 8e4539f..ec5cb10 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1345,6 +1345,10 @@ static __init void da850_evm_init(void)
{
int ret;
+ ret = da8xx_register_cfgchip();
+ if (ret)
+ pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
+
ret = da850_register_gpio();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c
b/arch/arm/mach-davinci/board-mityomapl138.c
index bc4e63f..1a6d430 100644
--- a/arch/arm/mach-davinci/board-mityomapl138.c
+++ b/arch/arm/mach-davinci/board-mityomapl138.c
@@ -514,6 +514,10 @@ static void __init mityomapl138_init(void)
{
int ret;
+ ret = da8xx_register_cfgchip();
+ if (ret)
+ pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
+
/* for now, no special EDMA channels are reserved */
ret = da850_register_edma(NULL);
if (ret)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c
b/arch/arm/mach-davinci/board-omapl138-hawk.c
index d4930b6..8691a25 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -294,6 +294,10 @@ static __init void omapl138_hawk_init(void)
{
int ret;
+ ret = da8xx_register_cfgchip();
+ if (ret)
+ pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
+
ret = da850_register_gpio();
if (ret)
pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/devices-da8xx.c
b/arch/arm/mach-davinci/devices-da8xx.c
index 725e693..bf5f145 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -11,6 +11,7 @@
* (at your option) any later version.
*/
#include <linux/init.h>
+#include <linux/platform_data/syscon.h>
#include <linux/platform_device.h>
#include <linux/dma-contiguous.h>
#include <linux/serial_8250.h>
@@ -1109,3 +1110,30 @@ int __init da850_register_sata(unsigned long
refclkpn)
return platform_device_register(&da850_sata_device);
}
#endif
+
+static struct syscon_platform_data da8xx_cfgchip_platform_data = {
+ .label = "cfgchip",
+};
+
+static struct resource da8xx_cfgchip_resources[] = {
+ {
+ .start = DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP0_REG,
+ .end = DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP4_REG + 3,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device da8xx_cfgchip_device = {
+ .name = "syscon",
+ .id = -1,
+ .dev = {
+ .platform_data = &da8xx_cfgchip_platform_data,
+ },
+ .num_resources = ARRAY_SIZE(da8xx_cfgchip_resources),
+ .resource = da8xx_cfgchip_resources,
+};
+
+int __init da8xx_register_cfgchip(void)
+{
+ return platform_device_register(&da8xx_cfgchip_device);
+}
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h
b/arch/arm/mach-davinci/include/mach/da8xx.h
index c367530..c32444b 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -61,6 +61,7 @@ extern unsigned int da850_max_speed;
#define DA8XX_CFGCHIP1_REG 0x180
#define DA8XX_CFGCHIP2_REG 0x184
#define DA8XX_CFGCHIP3_REG 0x188
+#define DA8XX_CFGCHIP4_REG 0x18c
#define DA8XX_SYSCFG1_BASE (IO_PHYS + 0x22C000)
#define DA8XX_SYSCFG1_VIRT(x) (da8xx_syscfg1_base + (x))
@@ -116,6 +117,7 @@ void da8xx_rproc_reserve_cma(void);
int da8xx_register_rproc(void);
int da850_register_gpio(void);
int da830_register_gpio(void);
+int da8xx_register_cfgchip(void);
extern struct platform_device da8xx_serial_device[];
extern struct emac_platform_data da8xx_emac_pdata;
--
2.7.4
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