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authorVadim Bendebury <vbendeb@chromium.org>2014-09-08 14:34:09 -0700
committerPatrick Georgi <pgeorgi@google.com>2015-03-28 08:48:20 +0100
commitc7bbc04544f60d5be44ea4c61899169406066a33 (patch)
treefc076a21604bdc55c8d44c92b2b9509c33506c1e /src
parent2786ce0b485f39dd5c9fa0fc037fe214adb771e5 (diff)
downloadcoreboot-c7bbc04544f60d5be44ea4c61899169406066a33.tar.xz
storm: deassert SW_RESET signal at startup
The proto0.2 hardware connects gpio26 (sw reset) to the ethernet switch reset pit. The output stays low (or high-z) after power up, which holds the switch in reset. Deassert the signal at startup on hardware rev 1 and later. BUG=chrome-os-partner:31780 TEST=with this patch applied, when proto0.2 boots, the ethernet switch's LED blink once, as was the case with proto0. Change-Id: I4c5a0cc499563a33aa7d29be7767d0ec5d93c20f Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 6788962172c6e29e193fa3e85ca79cb83a96e154 Original-Change-Id: I81b3dccb1d1d43c5c1e6dcb5400af8eed6dee870 Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/217087 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/9120 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/mainboard/google/storm/mainboard.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mainboard/google/storm/mainboard.c b/src/mainboard/google/storm/mainboard.c
index ded423aa9f..ebe284911d 100644
--- a/src/mainboard/google/storm/mainboard.c
+++ b/src/mainboard/google/storm/mainboard.c
@@ -91,10 +91,24 @@ static void setup_tpm(void)
gpio_set_out_value(TPM_RESET_GPIO, 1);
}
+#define SW_RESET_GPIO 26
+static void deassert_sw_reset(void)
+{
+ if (board_id() == 0)
+ return;
+
+ /* only proto0.2 and later care about this. */
+ gpio_tlmm_config_set(SW_RESET_GPIO, FUNC_SEL_GPIO,
+ GPIO_PULL_UP, GPIO_4MA, GPIO_ENABLE);
+
+ gpio_set_out_value(SW_RESET_GPIO, 1);
+}
+
static void mainboard_init(device_t dev)
{
setup_mmu();
setup_usb();
+ deassert_sw_reset();
setup_tpm();
}