* [PATCHv2 2.6.34 1/2] mx5: Add i2c to Freescale MX51 Babbage HW
@ 2010-05-27 14:57 Dinh.Nguyen
2010-05-27 14:57 ` [PATCHv2 2.6.34 2/2] mx5: Register i2c on " Dinh.Nguyen
2010-05-27 15:02 ` [PATCHv2 2.6.34 1/2] mx5: Add i2c to " Daniel Mack
0 siblings, 2 replies; 3+ messages in thread
From: Dinh.Nguyen @ 2010-05-27 14:57 UTC (permalink / raw)
To: linux-kernel
Cc: linux-arm-kernel, s.hauer, valentin.longchamp, daniel,
grant.likely, xiao-lizhang, Dinh Nguyen
From: Dinh Nguyen <Dinh.Nguyen@freescale.com>
This patch adds I2C functionality to the Freescale MX51 Babbage HW.
The patch adds device structures, i2c board slave device defines,
IOMUX pin defines, and clocks.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
---
arch/arm/mach-mx5/clock-mx51.c | 11 +++++
arch/arm/mach-mx5/devices.c | 58 +++++++++++++++++++++++++++
arch/arm/mach-mx5/devices.h | 3 +
arch/arm/plat-mxc/include/mach/iomux-mx51.h | 18 ++++++---
4 files changed, 84 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index d9f612d..fd24092 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -798,6 +798,14 @@ DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET,
NULL, NULL, &ipg_clk, NULL);
+/* I2C */
+DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG10_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+
/* FEC */
DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET,
NULL, NULL, &ipg_clk, NULL);
@@ -815,6 +823,9 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
_REGISTER_CLOCK(NULL, "gpt", gpt_clk)
_REGISTER_CLOCK("fec.0", NULL, fec_clk)
+ _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk)
+ _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk)
+ _REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk)
_REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk)
_REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk)
_REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk)
diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c
index 23850e6..922a70e 100644
--- a/arch/arm/mach-mx5/devices.c
+++ b/arch/arm/mach-mx5/devices.c
@@ -93,6 +93,64 @@ struct platform_device mxc_fec_device = {
.resource = mxc_fec_resources,
};
+static struct resource mxc_i2c0_resources[] = {
+ {
+ .start = MX51_I2C1_BASE_ADDR,
+ .end = MX51_I2C1_BASE_ADDR + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = MX51_MXC_INT_I2C1,
+ .end = MX51_MXC_INT_I2C1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device mxc_i2c_device0 = {
+ .name = "imx-i2c",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mxc_i2c0_resources),
+ .resource = mxc_i2c0_resources,
+};
+
+static struct resource mxc_i2c1_resources[] = {
+ {
+ .start = MX51_I2C2_BASE_ADDR,
+ .end = MX51_I2C2_BASE_ADDR + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = MX51_MXC_INT_I2C2,
+ .end = MX51_MXC_INT_I2C2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device mxc_i2c_device1 = {
+ .name = "imx-i2c",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(mxc_i2c1_resources),
+ .resource = mxc_i2c1_resources,
+};
+
+static struct resource mxc_hsi2c_resources[] = {
+ {
+ .start = MX51_HSI2C_DMA_BASE_ADDR,
+ .end = MX51_HSI2C_DMA_BASE_ADDR + SZ_16K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = MX51_MXC_INT_HS_I2C,
+ .end = MX51_MXC_INT_HS_I2C,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device mxc_hsi2c_device = {
+ .name = "imx-i2c",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(mxc_hsi2c_resources),
+ .resource = mxc_hsi2c_resources
+};
+
static u64 usb_dma_mask = DMA_BIT_MASK(32);
static struct resource usbotg_resources[] = {
diff --git a/arch/arm/mach-mx5/devices.h b/arch/arm/mach-mx5/devices.h
index 0494d6b..d0451bf 100644
--- a/arch/arm/mach-mx5/devices.h
+++ b/arch/arm/mach-mx5/devices.h
@@ -5,3 +5,6 @@ extern struct platform_device mxc_fec_device;
extern struct platform_device mxc_usbdr_host_device;
extern struct platform_device mxc_usbh1_device;
extern struct platform_device mxc_usbdr_udc_device;
+extern struct platform_device mxc_i2c_device0;
+extern struct platform_device mxc_i2c_device1;
+extern struct platform_device mxc_hsi2c_device;
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
index ab0f95d..6ea6861 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
@@ -38,6 +38,8 @@ typedef enum iomux_config {
PAD_CTL_SRE_FAST)
#define MX51_UART3_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_DSE_HIGH | \
PAD_CTL_SRE_FAST)
+#define MX51_I2C_PAD_CTRL (PAD_CTL_SRE_FAST | PAD_CTL_ODE | \
++ PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP | PAD_CTL_HYS)
#define MX51_USBH1_PAD_CTRL (PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | \
PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
PAD_CTL_PKE | PAD_CTL_HYS)
@@ -57,10 +59,12 @@ typedef enum iomux_config {
/* PAD MUX ALT INPSE PATH PADCTRL */
-#define MX51_PAD_GPIO_2_0__EIM_D16 IOMUX_PAD(0x3f0, 0x05c, 1, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_EIM_D16__I2C1_SDA IOMUX_PAD(0x3f0, 0x05c, IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION, \
+ 0x09b4, 0, MX51_I2C_PAD_CTRL)
#define MX51_PAD_GPIO_2_1__EIM_D17 IOMUX_PAD(0x3f4, 0x060, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_2_2__EIM_D18 IOMUX_PAD(0x3f8, 0x064, 1, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_GPIO_2_3__EIM_D19 IOMUX_PAD(0x3fc, 0x068, 1, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_EIM_D19__I2C1_SCL IOMUX_PAD(0x3fc, 0x068, IOMUX_CONFIG_ALT4 | IOMUX_CONFIG_SION, \
+ 0x09b0, 0, MX51_I2C_PAD_CTRL)
#define MX51_PAD_GPIO_2_4__EIM_D20 IOMUX_PAD(0x400, 0x06c, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_2_5__EIM_D21 IOMUX_PAD(0x404, 0x070, 1, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_EIM_D21__GPIO_2_5 IOMUX_PAD(0x404, 0x070, IOMUX_CONFIG_ALT1, 0x0, 0, MX51_GPIO_PAD_CTRL)
@@ -179,8 +183,8 @@ typedef enum iomux_config {
#define MX51_PAD_GPIO_4_14__CSI2_HSYNC IOMUX_PAD(0x5E0, 0x1F0, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_15__CSI2_PIXCLK IOMUX_PAD(0x5E4, 0x1F4, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_CSI2_PKE0__CSI2_PKE0 IOMUX_PAD(0x81C, 0x0, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_GPIO_4_16__I2C1_CLK IOMUX_PAD(0x5E8, 0x1F8, 3, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_GPIO_4_17__I2C1_DAT IOMUX_PAD(0x5EC, 0x1FC, 3, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_I2C1_CLK__HSI2C_CLK IOMUX_PAD(0x5E8, 0x1F8, IOMUX_CONFIG_ALT0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_I2C1_DAT__HSI2C_DAT IOMUX_PAD(0x5EC, 0x1FC, IOMUX_CONFIG_ALT0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_18__AUD3_BB_TXD IOMUX_PAD(0x5F0, 0x200, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_19__AUD3_BB_RXD IOMUX_PAD(0x5F4, 0x204, 3, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_GPIO_4_20__AUD3_BB_CK IOMUX_PAD(0x5F8, 0x208, 3, 0x0, 0, NO_PAD_CTRL)
@@ -213,8 +217,10 @@ typedef enum iomux_config {
#define MX51_PAD_KEY_COL1__KEY_COL1 IOMUX_PAD(0x650, 0x260, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL2__KEY_COL2 IOMUX_PAD(0x654, 0x264, 0, 0x0, 0, NO_PAD_CTRL)
#define MX51_PAD_KEY_COL3__KEY_COL3 IOMUX_PAD(0x658, 0x268, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_KEY_COL4__KEY_COL4 IOMUX_PAD(0x65C, 0x26C, 0, 0x0, 0, NO_PAD_CTRL)
-#define MX51_PAD_KEY_COL5__KEY_COL5 IOMUX_PAD(0x660, 0x270, 0, 0x0, 0, NO_PAD_CTRL)
+#define MX51_PAD_KEY_COL4__I2C2_SCL IOMUX_PAD(0x65C, 0x26C, IOMUX_CONFIG_ALT3 | IOMUX_CONFIG_SION, \
+ 0x09b8, 1, MX51_I2C_PAD_CTRL)
+#define MX51_PAD_KEY_COL5__I2C2_SDA IOMUX_PAD(0x660, 0x270, IOMUX_CONFIG_ALT3 | IOMUX_CONFIG_SION, \
+ 0x09bc, 1, MX51_I2C_PAD_CTRL)
#define MX51_PAD_USBH1_CLK__USBH1_CLK IOMUX_PAD(0x678, 0x278, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)
#define MX51_PAD_USBH1_DIR__USBH1_DIR IOMUX_PAD(0x67C, 0x27C, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)
#define MX51_PAD_USBH1_STP__USBH1_STP IOMUX_PAD(0x680, 0x280, IOMUX_CONFIG_ALT0, 0x0, 0, MX51_USBH1_PAD_CTRL)
--
1.6.0.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCHv2 2.6.34 2/2] mx5: Register i2c on Freescale MX51 Babbage HW
2010-05-27 14:57 [PATCHv2 2.6.34 1/2] mx5: Add i2c to Freescale MX51 Babbage HW Dinh.Nguyen
@ 2010-05-27 14:57 ` Dinh.Nguyen
2010-05-27 15:02 ` [PATCHv2 2.6.34 1/2] mx5: Add i2c to " Daniel Mack
1 sibling, 0 replies; 3+ messages in thread
From: Dinh.Nguyen @ 2010-05-27 14:57 UTC (permalink / raw)
To: linux-kernel
Cc: linux-arm-kernel, s.hauer, valentin.longchamp, daniel,
grant.likely, xiao-lizhang, Dinh Nguyen
From: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Add device registration and setup IOMUX pins in the mx51_babbage
board feil.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
---
arch/arm/mach-mx5/board-mx51_babbage.c | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index ed885f9..19cde68 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
+#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/io.h>
@@ -21,6 +22,7 @@
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx51.h>
+#include <mach/i2c.h>
#include <mach/mxc_ehci.h>
#include <asm/irq.h>
@@ -64,6 +66,18 @@ static struct pad_desc mx51babbage_pads[] = {
MX51_PAD_EIM_D27__UART3_RTS,
MX51_PAD_EIM_D24__UART3_CTS,
+ /* I2C1 */
+ MX51_PAD_EIM_D16__I2C1_SDA,
+ MX51_PAD_EIM_D19__I2C1_SCL,
+
+ /* I2C2 */
+ MX51_PAD_KEY_COL4__I2C2_SCL,
+ MX51_PAD_KEY_COL5__I2C2_SDA,
+
+ /* HSI2C */
+ MX51_PAD_I2C1_CLK__HSI2C_CLK,
+ MX51_PAD_I2C1_DAT__HSI2C_DAT,
+
/* USB HOST1 */
MX51_PAD_USBH1_CLK__USBH1_CLK,
MX51_PAD_USBH1_DIR__USBH1_DIR,
@@ -99,6 +113,14 @@ static inline void mxc_init_imx_uart(void)
}
#endif /* SERIAL_IMX */
+static struct imxi2c_platform_data babbage_i2c_data = {
+ .bitrate = 100000,
+};
+
+static struct imxi2c_platform_data babbage_hsi2c_data = {
+ .bitrate = 400000,
+};
+
static int gpio_usbh1_active(void)
{
struct pad_desc usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO_1_27;
@@ -230,6 +252,10 @@ static void __init mxc_board_init(void)
mxc_init_imx_uart();
platform_add_devices(devices, ARRAY_SIZE(devices));
+ mxc_register_device(&mxc_i2c_device0, &babbage_i2c_data);
+ mxc_register_device(&mxc_i2c_device1, &babbage_i2c_data);
+ mxc_register_device(&mxc_hsi2c_device, &babbage_hsi2c_data);
+
if (otg_mode_host)
mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
else {
--
1.6.0.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCHv2 2.6.34 1/2] mx5: Add i2c to Freescale MX51 Babbage HW
2010-05-27 14:57 [PATCHv2 2.6.34 1/2] mx5: Add i2c to Freescale MX51 Babbage HW Dinh.Nguyen
2010-05-27 14:57 ` [PATCHv2 2.6.34 2/2] mx5: Register i2c on " Dinh.Nguyen
@ 2010-05-27 15:02 ` Daniel Mack
1 sibling, 0 replies; 3+ messages in thread
From: Daniel Mack @ 2010-05-27 15:02 UTC (permalink / raw)
To: Dinh.Nguyen
Cc: linux-kernel, linux-arm-kernel, s.hauer, valentin.longchamp,
grant.likely, xiao-lizhang
On Thu, May 27, 2010 at 09:57:48AM -0500, Dinh.Nguyen@freescale.com wrote:
> This patch adds I2C functionality to the Freescale MX51 Babbage HW.
> The patch adds device structures, i2c board slave device defines,
> IOMUX pin defines, and clocks.
>
> Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
> ---
> arch/arm/mach-mx5/clock-mx51.c | 11 +++++
> arch/arm/mach-mx5/devices.c | 58 +++++++++++++++++++++++++++
> arch/arm/mach-mx5/devices.h | 3 +
> arch/arm/plat-mxc/include/mach/iomux-mx51.h | 18 ++++++---
> 4 files changed, 84 insertions(+), 6 deletions(-)
>
[...]
> static struct resource usbotg_resources[] = {
> diff --git a/arch/arm/mach-mx5/devices.h b/arch/arm/mach-mx5/devices.h
> index 0494d6b..d0451bf 100644
> --- a/arch/arm/mach-mx5/devices.h
> +++ b/arch/arm/mach-mx5/devices.h
> @@ -5,3 +5,6 @@ extern struct platform_device mxc_fec_device;
> extern struct platform_device mxc_usbdr_host_device;
> extern struct platform_device mxc_usbh1_device;
> extern struct platform_device mxc_usbdr_udc_device;
> +extern struct platform_device mxc_i2c_device0;
> +extern struct platform_device mxc_i2c_device1;
> +extern struct platform_device mxc_hsi2c_device;
> diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> index ab0f95d..6ea6861 100644
> --- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> +++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> @@ -38,6 +38,8 @@ typedef enum iomux_config {
> PAD_CTL_SRE_FAST)
> #define MX51_UART3_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_DSE_HIGH | \
> PAD_CTL_SRE_FAST)
> +#define MX51_I2C_PAD_CTRL (PAD_CTL_SRE_FAST | PAD_CTL_ODE | \
> ++ PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP | PAD_CTL_HYS)
^
I believe something went wrong here.
Daniel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-05-27 14:57 ` [PATCHv2 2.6.34 2/2] mx5: Register i2c on " Dinh.Nguyen
2010-05-27 15:02 ` [PATCHv2 2.6.34 1/2] mx5: Add i2c to " Daniel Mack
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