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From: Michael Grzeschik <m.grzeschik@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 2/3] mxs_spi: initial commit
Date: Mon,  4 Feb 2013 17:26:19 +0100	[thread overview]
Message-ID: <1359995179-2519-4-git-send-email-m.grzeschik@pengutronix.de> (raw)
In-Reply-To: <1359995179-2519-1-git-send-email-m.grzeschik@pengutronix.de>

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
---
 arch/arm/boards/freescale-mx28-evk/mx28-evk.c |   28 +++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boards/freescale-mx28-evk/mx28-evk.c b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c
index 4311473..325365b 100644
--- a/arch/arm/boards/freescale-mx28-evk/mx28-evk.c
+++ b/arch/arm/boards/freescale-mx28-evk/mx28-evk.c
@@ -30,6 +30,7 @@
 #include <mach/mci.h>
 #include <mach/fb.h>
 #include <mach/ocotp.h>
+#include <spi/spi.h>
 
 #include <asm/armlinux.h>
 #include <asm/mmu.h>
@@ -126,6 +127,13 @@ static const uint32_t mx28evk_pads[] = {
 	GPMI_ALE | VE_3_3V,
 	GPMI_CLE | VE_3_3V,
 	GPMI_RESETN,		/* act as WP, external PU */
+
+	/* SSP */
+	SSP2_D0 | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* MISO DO */
+	SSP2_D3 | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* SS0 !CS */
+	SSP2_CMD | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* MOSI DIO */
+	SSP2_SCK | VE_3_3V | PULLUP(1) | STRENGTH(S8MA), /* CLK */
+
 };
 
 static struct mxs_mci_platform_data mci_pdata = {
@@ -225,6 +233,17 @@ static int mx28_evk_mem_init(void)
 }
 mem_initcall(mx28_evk_mem_init);
 
+static const struct spi_board_info mx28evk_spi_board_info[] = {
+	{
+		.name = "m25p80",
+		/* we leave this with the lower frequency
+		   as the ssp unit otherwise locks up */
+		.max_speed_hz = 32000000,
+		.bus_num = 2,
+		.chip_select = 0,
+	}
+};
+
 static int mx28_evk_devices_init(void)
 {
 	int i;
@@ -235,8 +254,11 @@ static int mx28_evk_devices_init(void)
 
 	/* enable IOCLK0 to run at the PLL frequency */
 	imx_set_ioclk(0, 480000000);
+	imx_set_ioclk(1, 320000000);
 	/* run the SSP unit clock at 100 MHz */
 	imx_set_sspclk(0, 100000000, 1);
+	/* run the SSP unit 2 clock at 160Mhz */
+	imx_set_sspclk(2, 160000000, 1);
 
 	armlinux_set_bootparams((void *)IMX_MEMORY_BASE + 0x100);
 	armlinux_set_architecture(MACH_TYPE_MX28EVK);
@@ -259,6 +281,12 @@ static int mx28_evk_devices_init(void)
 	add_generic_device("mxs_nand", 0, NULL, MXS_GPMI_BASE, 0x2000,
 			   IORESOURCE_MEM, NULL);
 
+	spi_register_board_info(mx28evk_spi_board_info,
+			ARRAY_SIZE(mx28evk_spi_board_info));
+
+	add_generic_device("mxs_spi", 2, NULL, IMX_SSP2_BASE, 0x2000,
+			   IORESOURCE_MEM, NULL);
+
 	return 0;
 }
 device_initcall(mx28_evk_devices_init);
-- 
1.7.10.4


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  parent reply	other threads:[~2013-02-04 16:26 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-04 16:26 [PATCH 0/3] Add mxs spi driver and mx28evk as its first user Michael Grzeschik
2013-02-04 16:26 ` [PATCH 1/3] mxs: ssp move to common register layout Michael Grzeschik
2013-02-04 16:26 ` [PATCH 2/3] mxs_spi: initial commit Michael Grzeschik
2013-02-04 16:26 ` Michael Grzeschik [this message]
2013-02-04 17:10   ` Michael Grzeschik
2013-02-04 17:26 [PATCH 0/3] Add mxs spi driver and mx28evk as its first user Michael Grzeschik
2013-02-04 17:26 ` [PATCH 2/3] mxs_spi: initial commit Michael Grzeschik
2013-02-04 17:57   ` Alexander Aring
2013-02-04 18:15     ` Alexander Aring
2013-02-04 18:18       ` Alexander Aring
2013-02-05  9:22   ` Sascha Hauer

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