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| author | Christian Riesch <christian.riesch@omicron.at> | 2011-10-13 00:52:29 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-10-27 21:56:36 +0200 |
| commit | ae5c77dd908edaf55025fa3f41095bfb9cb1b973 (patch) | |
| tree | c15f7b18a32fe25775dbb6acb859af98a43dc638 /board/davinci/da8xxevm/da850evm.c | |
| parent | 3b413c5bfa2595483baaefb006cbad1ee4b489fc (diff) | |
| download | u-boot-imx-ae5c77dd908edaf55025fa3f41095bfb9cb1b973.zip u-boot-imx-ae5c77dd908edaf55025fa3f41095bfb9cb1b973.tar.gz u-boot-imx-ae5c77dd908edaf55025fa3f41095bfb9cb1b973.tar.bz2 | |
da850evm: Move LPSC configuration to board_early_init_f()
Since commit f1d2b313c9eb6808d30c16a9eb5251240452a56c the serial
port of the da850evm is accessed before the UART2 peripheral of
the SoC is powered on in the function board_init() in
board/davinci/da8xxevm/da850evm.c.
When u-boot is used in conjunction with the UBL (user boot loader, see
doc/README.davinci) on this board, the UART2 peripheral is already
turned on by UBL at the time u-boot is started. Hence, the wrong
initialization sequence is not noticed by most users. However, if UBL is not
used, u-boot must power on the peripheral before using it.
This patch adds a board_early_init_f() function for the LPSC
configuration to the da850evm board configuration.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'board/davinci/da8xxevm/da850evm.c')
| -rw-r--r-- | board/davinci/da8xxevm/da850evm.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c index 46924d3..e0a3bbe 100644 --- a/board/davinci/da8xxevm/da850evm.c +++ b/board/davinci/da8xxevm/da850evm.c @@ -278,6 +278,20 @@ u32 get_board_rev(void) return rev; } +int board_early_init_f(void) +{ + /* + * Power on required peripherals + * ARM does not have access by default to PSC0 and PSC1 + * assuming here that the DSP bootloader has set the IOPU + * such that PSC access is available to ARM + */ + if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) + return 1; + + return 0; +} + int board_init(void) { #ifdef CONFIG_USE_NOR @@ -310,15 +324,6 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; - /* - * Power on required peripherals - * ARM does not have access by default to PSC0 and PSC1 - * assuming here that the DSP bootloader has set the IOPU - * such that PSC access is available to ARM - */ - if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) - return 1; - /* setup the SUSPSRC for ARM to control emulation suspend */ writel(readl(&davinci_syscfg_regs->suspsrc) & ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C | |