First set of u-boot-atmel fixes for 2019.07 cycle

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Merge tag 'u-boot-atmel-fixes-2019.07-a' of git://git.denx.de/u-boot-atmel

First set of u-boot-atmel fixes for 2019.07 cycle

arch/arm/mach-at91/spl_atmel.c

@@ -44,7 +44,15 @@ static void switch_to_main_crystal_osc(void)
 #endif
 
 	tmp = readl(&pmc->mor);
+/*
+ * some boards have an external oscillator with driving.
+ * in this case we need to disable the internal SoC driving (bypass mode)
+ */
+#if defined(CONFIG_SPL_AT91_MCK_BYPASS)
+	tmp |= AT91_PMC_MOR_OSCBYPASS;
+#else
 	tmp &= ~AT91_PMC_MOR_OSCBYPASS;
+#endif
 	tmp &= ~AT91_PMC_MOR_KEY(0xff);
 	tmp |= AT91_PMC_MOR_KEY(0x37);
 	writel(tmp, &pmc->mor);

board/atmel/sama5d2_icp/sama5d2_icp.c

@@ -73,6 +73,36 @@ int misc_init_r(void)
 /* SPL */
 #ifdef CONFIG_SPL_BUILD
 
+/* must set PB25 low to enable the CAN transceivers */
+static void board_can_stdby_dis(void)
+{
+	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 25, 0);
+}
+
+static void board_leds_init(void)
+{
+	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 0, 0); /* RED */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 1, 1); /* GREEN */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTA, 31, 0); /* BLUE */
+}
+
+/* deassert reset lines for external periph in case of warm reboot */
+static void board_reset_additional_periph(void)
+{
+	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 16, 0); /* LAN9252_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTC, 2, 0); /* HSIC_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTC, 17, 0); /* USB2534_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTD, 4, 0); /* KSZ8563_RST */
+}
+
+static void board_start_additional_periph(void)
+{
+	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 16, 1); /* LAN9252_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTC, 2, 1); /* HSIC_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTC, 17, 1); /* USB2534_RST */
+	atmel_pio4_set_pio_output(AT91_PIO_PORTD, 4, 1); /* KSZ8563_RST */
+}
+
 #ifdef CONFIG_SD_BOOT
 void spl_mmc_init(void)
 {
@@ -93,12 +123,20 @@ void spl_board_init(void)
 #ifdef CONFIG_SD_BOOT
 	spl_mmc_init();
 #endif
+	board_reset_additional_periph();
+	board_can_stdby_dis();
+	board_leds_init();
 }
 
 void spl_display_print(void)
 {
 }
 
+void spl_board_prepare_for_boot(void)
+{
+	board_start_additional_periph();
+}
+
 static void ddrc_conf(struct atmel_mpddrc_config *ddrc)
 {
 	ddrc->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR3_SDRAM);

common/spl/Kconfig

@@ -1187,5 +1187,17 @@ config TPL_YMODEM_SUPPORT
 
 endif # TPL
 
+config SPL_AT91_MCK_BYPASS
+	bool "Use external clock signal as a source of main clock for AT91 platforms"
+	depends on ARCH_AT91
+	default n
+	help
+	  Use external 8 to 24 Mhz clock signal as source of main clock instead
+	  of an external crystal oscillator.
+	  This option disables the internal driving on the XOUT pin.
+	  The external source has to provide a stable clock on the XIN pin.
+	  If this option is disabled, the SoC expects a crystal oscillator
+	  that needs driving on both XIN and XOUT lines.
+
 endif # SPL
 endmenu

configs/gardena-smart-gateway-at91sam_defconfig

@@ -36,6 +36,7 @@ CONFIG_CMD_DM=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_MTD=y
 CONFIG_CMD_NAND=y
+CONFIG_CMD_WDT=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y

configs/sama5d2_icp_mmc_defconfig

@@ -23,12 +23,12 @@ CONFIG_SD_BOOT=y
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTARGS=y
 # CONFIG_DISPLAY_BOARDINFO is not set
-CONFIG_SPL_TEXT_BASE=0x200000
 CONFIG_SPL_SEPARATE_BSS=y
 CONFIG_SPL_DISPLAY_PRINT=y
 # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR is not set
 CONFIG_SPL_RAM_SUPPORT=y
 CONFIG_SPL_RAM_DEVICE=y
+CONFIG_SPL_AT91_MCK_BYPASS=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set
@@ -75,3 +75,4 @@ CONFIG_TIMER=y
 CONFIG_SPL_TIMER=y
 CONFIG_ATMEL_PIT_TIMER=y
 CONFIG_OF_LIBFDT_OVERLAY=y
+# CONFIG_EFI_LOADER_HII is not set

configs/sama5d2_ptc_ek_mmc_defconfig

@@ -51,6 +51,7 @@ CONFIG_MMC_SDHCI_ATMEL=y
 CONFIG_NAND=y
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_ETH=y
 CONFIG_MACB=y
 CONFIG_PINCTRL=y

configs/sama5d2_ptc_ek_nandflash_defconfig

@@ -50,6 +50,7 @@ CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ATMEL=y
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_ETH=y
 CONFIG_MACB=y
 CONFIG_PINCTRL=y

configs/sama5d4_xplained_mmc_defconfig

@@ -59,6 +59,8 @@ CONFIG_DM_MMC=y
 CONFIG_GENERIC_ATMEL_MCI=y
 CONFIG_NAND=y
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=8
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000