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Date: Tue, 13 Dec 2011 07:31:51 +0100
From: Eric Bénard <eric@...rea.com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Sascha Hauer <kernel@...gutronix.de>,
Amit Kucheria <amit.kucheria@...onical.com> (maintainer:ARM/FREESCALE
IMX51),
Russell King <linux@....linux.org.uk> (maintainer:ARM PORT),
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 19/19] eukrea-cpuimx51sd: support rev2 PCB
rev1 were shipped with silicon 2.0, rev2 with silicon 3.0
so we are using the silicon version to know the PCB revision
Signed-off-by: Eric Bénard <eric@...rea.com>
Cc: Sascha Hauer <kernel@...gutronix.de>
---
arch/arm/mach-mx5/board-cpuimx51sd.c | 48 ++++++++++++++++++++++++++++-----
1 files changed, 40 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-mx5/board-cpuimx51sd.c b/arch/arm/mach-mx5/board-cpuimx51sd.c
index 9e7f8df..fb20e69 100644
--- a/arch/arm/mach-mx5/board-cpuimx51sd.c
+++ b/arch/arm/mach-mx5/board-cpuimx51sd.c
@@ -41,11 +41,13 @@
#define USBH1_RST IMX_GPIO_NR(2, 28)
#define ETH_RST IMX_GPIO_NR(2, 31)
-#define TSC2007_IRQGPIO IMX_GPIO_NR(3, 12)
+#define TSC2007_IRQGPIO_REV2 IMX_GPIO_NR(3, 12)
+#define TSC2007_IRQGPIO_REV3 IMX_GPIO_NR(4, 0)
#define CAN_IRQGPIO IMX_GPIO_NR(1, 1)
#define CAN_RST IMX_GPIO_NR(4, 15)
#define CAN_NCS IMX_GPIO_NR(4, 24)
-#define CAN_RXOBF IMX_GPIO_NR(1, 4)
+#define CAN_RXOBF_REV2 IMX_GPIO_NR(1, 4)
+#define CAN_RXOBF_REV3 IMX_GPIO_NR(3, 12)
#define CAN_RX1BF IMX_GPIO_NR(1, 6)
#define CAN_TXORTS IMX_GPIO_NR(1, 7)
#define CAN_TX1RTS IMX_GPIO_NR(1, 8)
@@ -89,6 +91,9 @@ static iomux_v3_cfg_t eukrea_cpuimx51sd_pads[] = {
/* HSI2C */
MX51_PAD_I2C1_CLK__GPIO4_16,
MX51_PAD_I2C1_DAT__GPIO4_17,
+ /* I2C1 */
+ MX51_PAD_SD2_CMD__I2C1_SCL,
+ MX51_PAD_SD2_CLK__I2C1_SDA,
/* CAN */
MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
@@ -108,15 +113,27 @@ static iomux_v3_cfg_t eukrea_cpuimx51sd_pads[] = {
NEW_PAD_CTRL(MX51_PAD_GPIO_NAND__GPIO_NAND, PAD_CTL_PUS_22K_UP |
PAD_CTL_PKE | PAD_CTL_SRE_FAST |
PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
+ NEW_PAD_CTRL(MX51_PAD_NANDF_D8__GPIO4_0, PAD_CTL_PUS_22K_UP |
+ PAD_CTL_PKE | PAD_CTL_SRE_FAST |
+ PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
+static int tsc2007_get_pendown_state(void)
+{
+ if (mx51_revision() < IMX_CHIP_REVISION_3_0)
+ return !gpio_get_value(TSC2007_IRQGPIO_REV2);
+ else
+ return !gpio_get_value(TSC2007_IRQGPIO_REV3);
+}
+
static struct tsc2007_platform_data tsc2007_info = {
.model = 2007,
.x_plate_ohms = 180,
+ .get_pendown_state = tsc2007_get_pendown_state,
};
static struct i2c_board_info eukrea_cpuimx51sd_i2c_devices[] = {
@@ -126,7 +143,6 @@ static struct i2c_board_info eukrea_cpuimx51sd_i2c_devices[] = {
I2C_BOARD_INFO("tsc2007", 0x49),
.type = "tsc2007",
.platform_data = &tsc2007_info,
- .irq = IMX_GPIO_TO_IRQ(TSC2007_IRQGPIO),
},
};
@@ -255,10 +271,14 @@ static const struct spi_imx_master cpuimx51sd_ecspi1_pdata __initconst = {
.num_chipselect = ARRAY_SIZE(cpuimx51sd_spi1_cs),
};
-static struct platform_device *platform_devices[] __initdata = {
+static struct platform_device *rev2_platform_devices[] __initdata = {
&hsi2c_gpio_device,
};
+static const struct imxi2c_platform_data cpuimx51sd_i2c_data __initconst = {
+ .bitrate = 100000,
+};
+
static void __init eukrea_cpuimx51sd_init(void)
{
imx51_soc_init();
@@ -292,13 +312,25 @@ static void __init eukrea_cpuimx51sd_init(void)
spi_register_board_info(cpuimx51sd_spi_device,
ARRAY_SIZE(cpuimx51sd_spi_device));
- gpio_request(TSC2007_IRQGPIO, "tsc2007_irq");
- gpio_direction_input(TSC2007_IRQGPIO);
- gpio_free(TSC2007_IRQGPIO);
+ if (mx51_revision() < IMX_CHIP_REVISION_3_0) {
+ eukrea_cpuimx51sd_i2c_devices[1].irq =
+ gpio_to_irq(TSC2007_IRQGPIO_REV2),
+ platform_add_devices(rev2_platform_devices,
+ ARRAY_SIZE(rev2_platform_devices));
+ gpio_request(TSC2007_IRQGPIO_REV2, "tsc2007_irq");
+ gpio_direction_input(TSC2007_IRQGPIO_REV2);
+ gpio_free(TSC2007_IRQGPIO_REV2);
+ } else {
+ eukrea_cpuimx51sd_i2c_devices[1].irq =
+ gpio_to_irq(TSC2007_IRQGPIO_REV3),
+ imx51_add_imx_i2c(0, &cpuimx51sd_i2c_data);
+ gpio_request(TSC2007_IRQGPIO_REV3, "tsc2007_irq");
+ gpio_direction_input(TSC2007_IRQGPIO_REV3);
+ gpio_free(TSC2007_IRQGPIO_REV3);
+ }
i2c_register_board_info(0, eukrea_cpuimx51sd_i2c_devices,
ARRAY_SIZE(eukrea_cpuimx51sd_i2c_devices));
- platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
if (otg_mode_host)
imx51_add_mxc_ehci_otg(&dr_utmi_config);
--
1.7.6.4
--
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