On 12/29/2011 12:09 AM, Dirk Behme wrote:
On 28.12.2011 13:32, Stefano Babic wrote:
On 26/12/2011 08:34, Dirk Behme wrote:
From: Jason Liu<jason....@linaro.org>
Add the initial support for Freescale i.MX6Q Sabre Lite board
Hi Dirk,
Index: freescale-u-boot-imx.git/MAINTAINERS
===================================================================
--- freescale-u-boot-imx.git.orig/MAINTAINERS
+++ freescale-u-boot-imx.git/MAINTAINERS
@@ -579,6 +579,7 @@ Jason Liu<r64...@freescale.com>
mx53evk i.MX53
mx53loco i.MX53
mx6qarm2 i.MX6Q
+ mx6qsabrelite i.MX6Q
Can you confirm that Jason is the maintainer of the board ?
Yes, I think so, it shouldn't have changed since v2
http://lists.denx.de/pipermail/u-boot/2011-December/113142.html
Jason?
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg usdhc_cfg[2] = {
+ {USDHC3_BASE_ADDR, 1},
+ {USDHC4_BASE_ADDR, 1},
+};
+
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+ struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+
+ if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
+ gpio_direction_input(192); /*GPIO7_0*/
+ *cd = gpio_get_value(192);
+ } else {
+ gpio_direction_input(38); /*GPIO2_6*/
+ *cd = gpio_get_value(38);
+ }
+
+ return 0;
+}
I have not an evident comment with this code, but there are pending
patches to change this behavior:
http://patchwork.ozlabs.org/patch/132398/
The patches already updates other i.MX boards. If, as I presume, this
patches goes soon in mainline, board_mmc_getcd() must be updated to be
adjusted for the new API. I will wait a while before merging your patch
to check the status of the mmc patchset.
Ok, good to know. Thanks!
Let us know if you want us to update this patch against
http://patchwork.ozlabs.org/patch/132398/
@@ -0,0 +1,67 @@
+U-Boot for the Freescale i.MX6q SabreLite board
+
+This file contains information for the port of U-Boot to the Freescale
+i.MX6q SabreLite board.
+
+1. Boot source, boot from SD card
+---------------------------------
+
+The recent mainline U-Boot for the Freescale i.MX6q SabreLite board supports
+boot from SD card only. However, by default, the early version of SabreLite
+boards boot from the SPI NOR flash. These boards need to be reflashed with
+a small SD card loader to support boot from SD card. This small SD card loader
+will be flashed into the SPI NOR. The board will still boot from SPI NOR, but
+the loader will in turn request the BootROM to load the U-Boot from SD card.
+At the moment of writing, please check with Freescale on the availablity of
+this small SD loader binary.
Ok, fine. For my information only, is there a revision version to be
checked if the board needs this small loader ?
Good question ;) There is some discussion if it is possible to make a new
version of the board which is configurable to SD boot by HW. But there seem to
be some layout issues. So atm I would answer your question with 'no'.
To clarify, all SabreLite boards produced to date have their boot fuses
blown to select boot to SPI NOR. In the future, this could be changed to
allow boot to SD, but that's a one-time choice.
The layout issues concern the use "Internal Boot Mode", which
allows a set of ~32 GPIOs to override the fuse settings, which will
require a bunch of pull-up/down resistors.
Best regards
Dirk
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