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From 8cea9443be01ccc2525ff1de17b0dddd7c27984e Mon Sep 17 00:00:00 2001
From: Steve Sakoman <steve@sakoman.com>
Date: Wed, 10 Feb 2010 14:40:56 -0800
Subject: [PATCH 02/50] OMAP3: add board revision detection for Overo
---
board/overo/overo.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++
board/overo/overo.h | 43 +++++++++++++++++++++---
2 files changed, 127 insertions(+), 6 deletions(-)
diff --git a/board/overo/overo.c b/board/overo/overo.c
index e85be7d..3df1a12 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -61,11 +61,101 @@ int board_init(void)
}
/*
+ * Routine: get_sdio2_config
+ * Description: Return information about the wifi module connection
+ * Returns 0 if the module connects though a level translator
+ * Returns 1 if the module connects directly
+ */
+int get_sdio2_config(void) {
+ int sdio_direct;
+
+ if (!omap_request_gpio(130) && !omap_request_gpio(139)){
+
+ omap_set_gpio_direction(130, 0);
+ omap_set_gpio_direction(139, 1);
+
+ sdio_direct = 1;
+ omap_set_gpio_dataout(130, 0);
+ if (omap_get_gpio_datain(139) == 0) {
+ omap_set_gpio_dataout(130, 1);
+ if (omap_get_gpio_datain(139) == 1)
+ sdio_direct = 0;
+ }
+
+ omap_free_gpio(130);
+ omap_free_gpio(139);
+ } else {
+ printf("Error: unable to acquire sdio2 clk GPIOs\n");
+ sdio_direct=-1;
+ }
+
+ return sdio_direct;
+}
+
+/*
+ * Routine: get_board_revision
+ * Description: Returns the board revision
+ */
+int get_board_revision(void) {
+ int revision;
+
+ if (!omap_request_gpio(126) && !omap_request_gpio(127) &&
+ !omap_request_gpio(128) && !omap_request_gpio(129)){
+
+ omap_set_gpio_direction(126, 1);
+ omap_set_gpio_direction(127, 1);
+ omap_set_gpio_direction(128, 1);
+ omap_set_gpio_direction(129, 1);
+
+ revision = 0;
+ if (omap_get_gpio_datain(126) == 0)
+ revision += 1;
+ if (omap_get_gpio_datain(127) == 0)
+ revision += 2;
+ if (omap_get_gpio_datain(128) == 0)
+ revision += 4;
+ if (omap_get_gpio_datain(129) == 0)
+ revision += 8;
+
+ omap_free_gpio(126);
+ omap_free_gpio(127);
+ omap_free_gpio(128);
+ omap_free_gpio(129);
+ } else {
+ printf("Error: unable to acquire board revision GPIOs\n");
+ revision=-1;
+ }
+
+ return revision;
+}
+
+/*
* Routine: misc_init_r
* Description: Configure board specific parts
*/
int misc_init_r(void)
{
+ printf("Board revision: ");
+ switch (get_board_revision()) {
+ case 0:
+ case 1:
+ switch (get_sdio2_config()) {
+ case 0:
+ printf(" 0\n");
+ MUX_OVERO_SDIO2_TRANSCEIVER();
+ break;
+ case 1:
+ printf(" 1\n");
+ MUX_OVERO_SDIO2_DIRECT();
+ break;
+ default:
+ printf(" unknown\n");
+ }
+ break;
+ default:
+ printf(" unsupported\n");
+ }
+
twl4030_power_init();
twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
diff --git a/board/overo/overo.h b/board/overo/overo.h
index 1873523..e120e09 100644
--- a/board/overo/overo.h
+++ b/board/overo/overo.h
@@ -206,12 +206,12 @@ const omap3_sysinfo sysinfo = {
MUX_VAL(CP(MMC1_DAT1), (IEN | PTU | EN | M0)) /*MMC1_DAT1*/\
MUX_VAL(CP(MMC1_DAT2), (IEN | PTU | EN | M0)) /*MMC1_DAT2*/\
MUX_VAL(CP(MMC1_DAT3), (IEN | PTU | EN | M0)) /*MMC1_DAT3*/\
- MUX_VAL(CP(MMC1_DAT4), (IEN | PTU | EN | M0)) /*MMC1_DAT4*/\
- MUX_VAL(CP(MMC1_DAT5), (IEN | PTU | EN | M0)) /*MMC1_DAT5*/\
- MUX_VAL(CP(MMC1_DAT6), (IEN | PTU | EN | M0)) /*MMC1_DAT6*/\
- MUX_VAL(CP(MMC1_DAT7), (IEN | PTU | EN | M0)) /*MMC1_DAT7*/\
+ MUX_VAL(CP(MMC1_DAT4), (IEN | PTU | EN | M4)) /*GPIO_126*/\
+ MUX_VAL(CP(MMC1_DAT5), (IEN | PTU | EN | M4)) /*GPIO_127*/\
+ MUX_VAL(CP(MMC1_DAT6), (IEN | PTU | EN | M4)) /*GPIO_128*/\
+ MUX_VAL(CP(MMC1_DAT7), (IEN | PTU | EN | M4)) /*GPIO_129*/\
/*Wireless LAN */\
- MUX_VAL(CP(MMC2_CLK), (IEN | PTU | EN | M0)) /*MMC2_CLK*/\
+ MUX_VAL(CP(MMC2_CLK), (IEN | PTU | EN | M4)) /*GPIO_130*/\
MUX_VAL(CP(MMC2_CMD), (IEN | PTU | EN | M0)) /*MMC2_CMD*/\
MUX_VAL(CP(MMC2_DAT0), (IEN | PTU | EN | M0)) /*MMC2_DAT0*/\
MUX_VAL(CP(MMC2_DAT1), (IEN | PTU | EN | M0)) /*MMC2_DAT1*/\
@@ -220,7 +220,7 @@ const omap3_sysinfo sysinfo = {
MUX_VAL(CP(MMC2_DAT4), (IEN | PTU | EN | M1)) /*MMC2_DIR_DAT0*/\
MUX_VAL(CP(MMC2_DAT5), (IEN | PTU | EN | M1)) /*MMC2_DIR_DAT1*/\
MUX_VAL(CP(MMC2_DAT6), (IEN | PTU | EN | M1)) /*MMC2_DIR_CMD*/\
- MUX_VAL(CP(MMC2_DAT7), (IEN | PTU | EN | M1)) /*MMC2_CLKIN*/\
+ MUX_VAL(CP(MMC2_DAT7), (IEN | PTU | EN | M4)) /*GPIO_139*/\
/*Bluetooth*/\
MUX_VAL(CP(MCBSP3_DX), (IEN | PTD | DIS | M1)) /*UART2_CTS*/\
MUX_VAL(CP(MCBSP3_DR), (IDIS | PTD | DIS | M1)) /*UART2_RTS*/\
@@ -387,5 +387,36 @@ const omap3_sysinfo sysinfo = {
MUX_VAL(CP(SDRC_CKE0), (IDIS | PTU | EN | M0)) /*sdrc_cke0*/\
MUX_VAL(CP(SDRC_CKE1), (IDIS | PTU | EN | M0)) /*sdrc_cke1*/
+#define MUX_OVERO_SDIO2_DIRECT() \
+ MUX_VAL(CP(MMC2_CLK), (IEN | PTU | EN | M0)) /*MMC2_CLK*/\
+ MUX_VAL(CP(MMC2_CMD), (IEN | PTU | EN | M0)) /*MMC2_CMD*/\
+ MUX_VAL(CP(MMC2_DAT0), (IEN | PTU | EN | M0)) /*MMC2_DAT0*/\
+ MUX_VAL(CP(MMC2_DAT1), (IEN | PTU | EN | M0)) /*MMC2_DAT1*/\
+ MUX_VAL(CP(MMC2_DAT2), (IEN | PTU | EN | M0)) /*MMC2_DAT2*/\
+ MUX_VAL(CP(MMC2_DAT3), (IEN | PTU | EN | M0)) /*MMC2_DAT3*/\
+ MUX_VAL(CP(MMC2_DAT4), (IEN | PTU | EN | M0)) /*MMC2_DAT4*/\
+ MUX_VAL(CP(MMC2_DAT5), (IEN | PTU | EN | M0)) /*MMC2_DAT5*/\
+ MUX_VAL(CP(MMC2_DAT6), (IEN | PTU | EN | M0)) /*MMC2_DAT6*/\
+ MUX_VAL(CP(MMC2_DAT7), (IEN | PTU | EN | M0)) /*MMC2_DAT7*/\
+ MUX_VAL(CP(MMC1_DAT4), (IEN | PTD | EN | M4)) /*GPIO_126*/\
+ MUX_VAL(CP(MMC1_DAT5), (IEN | PTU | EN | M4)) /*GPIO_127*/\
+ MUX_VAL(CP(MMC1_DAT6), (IEN | PTU | EN | M4)) /*GPIO_128*/\
+ MUX_VAL(CP(MMC1_DAT7), (IEN | PTU | EN | M4)) /*GPIO_129*/
+
+#define MUX_OVERO_SDIO2_TRANSCEIVER() \
+ MUX_VAL(CP(MMC2_CLK), (IEN | PTU | EN | M0)) /*MMC2_CLK*/\
+ MUX_VAL(CP(MMC2_CMD), (IEN | PTU | EN | M0)) /*MMC2_CMD*/\
+ MUX_VAL(CP(MMC2_DAT0), (IEN | PTU | EN | M0)) /*MMC2_DAT0*/\
+ MUX_VAL(CP(MMC2_DAT1), (IEN | PTU | EN | M0)) /*MMC2_DAT1*/\
+ MUX_VAL(CP(MMC2_DAT2), (IEN | PTU | EN | M0)) /*MMC2_DAT2*/\
+ MUX_VAL(CP(MMC2_DAT3), (IEN | PTU | EN | M0)) /*MMC2_DAT3*/\
+ MUX_VAL(CP(MMC2_DAT4), (IEN | PTU | EN | M1)) /*MMC2_DIR_DAT0*/\
+ MUX_VAL(CP(MMC2_DAT5), (IEN | PTU | EN | M1)) /*MMC2_DIR_DAT1*/\
+ MUX_VAL(CP(MMC2_DAT6), (IEN | PTU | EN | M1)) /*MMC2_DIR_CMD*/\
+ MUX_VAL(CP(MMC2_DAT7), (IEN | PTU | EN | M1)) /*MMC2_CLKIN*/\
+ MUX_VAL(CP(MMC1_DAT4), (IEN | PTU | EN | M4)) /*GPIO_126*/\
+ MUX_VAL(CP(MMC1_DAT5), (IEN | PTU | EN | M4)) /*GPIO_127*/\
+ MUX_VAL(CP(MMC1_DAT6), (IEN | PTU | EN | M4)) /*GPIO_128*/\
+ MUX_VAL(CP(MMC1_DAT7), (IEN | PTU | EN | M4)) /*GPIO_129*/
#endif
--
1.6.6.1
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