From: yegorslists@googlemail.com
To: barebox@lists.infradead.org
Subject: [PATCH] arm: baltos: enable mPCIe slot and configure external GPIO controller
Date: Fri, 10 Mar 2017 09:58:20 +0100 [thread overview]
Message-ID: <1489136300-8428-1-git-send-email-yegorslists@googlemail.com> (raw)
From: Yegor Yefremov <yegorslists@googlemail.com>
Baltos devices provide a mPCIe slot, whose power is turned off by
default. This patch activates mPCIe slot in barebox, so that for example
GSM modem can be already available in user space.
Also configure external GPIO controller via setting its output pins to
low.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
---
arch/arm/boards/vscom-baltos/board.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boards/vscom-baltos/board.c b/arch/arm/boards/vscom-baltos/board.c
index fea992d..39f40a6 100644
--- a/arch/arm/boards/vscom-baltos/board.c
+++ b/arch/arm/boards/vscom-baltos/board.c
@@ -41,6 +41,7 @@
#include <linux/err.h>
#include <mach/bbu.h>
#include <libfile.h>
+#include <gpio.h>
static struct omap_barebox_part baltos_barebox_part = {
.nand_offset = SZ_512K,
@@ -109,6 +110,17 @@ static int baltos_read_eeprom(void)
sprintf(var_buf, "%d", hw_param.SystemId);
globalvar_add_simple("board.id", var_buf);
+ /* enable mPCIe slot */
+ gpio_direction_output(100, 1);
+
+ /* configure output signals of the external GPIO controller */
+ if (hw_param.SystemId == 210 || hw_param.SystemId == 211) {
+ gpio_direction_output(132, 0);
+ gpio_direction_output(133, 0);
+ gpio_direction_output(134, 0);
+ gpio_direction_output(135, 0);
+ }
+
return 0;
}
environment_initcall(baltos_read_eeprom);
--
2.1.4
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next reply other threads:[~2017-03-10 8:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-10 8:58 yegorslists [this message]
2017-03-14 7:18 ` Sascha Hauer
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