[U-Boot] [PATCH] da850evm: Move LPSC configuration to board_early_init_f()

[Christian Riesch]

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. 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 at omicron.at>
Cc: Sudhakar Rajashekhara <sudhakar.raj at ti.com>
Cc: Sandeep Paulraj <s-paulraj at ti.com>
Cc: Heiko Schocher <hs at denx.de>
Cc: Ben Gardiner <bengardiner at nanometrics.ca>
---

In my first submission of this patch I forgot to cc Sudhakar Rajashekhara
as the board's maintainer. Sorry! Thank you for your comments!
Best regards, Christian

 board/davinci/da8xxevm/da850evm.c |   23 ++++++++++++++---------
 include/configs/da850evm.h        |    1 +
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 73eaa48..11ad88d 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -166,6 +166,20 @@ 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)
 {
 #ifndef CONFIG_USE_IRQ
@@ -195,15 +209,6 @@ 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 |
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index bbb5a9b..5d0f5bf 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -42,6 +42,7 @@
 #define CONFIG_SYS_HZ			1000
 #define CONFIG_SKIP_LOWLEVEL_INIT
 #define CONFIG_SYS_TEXT_BASE		0xc1080000
+#define CONFIG_BOARD_EARLY_INIT_F
 
 /*
  * Memory Info
-- 
1.7.0.4