Merge tag 'u-boot-stm32-20210113' of https://gitlab.denx.de/u-boot/custodians/u-boot-stm

- Enable logging features for stm32mp15 boards
- Update MAINTAINERS emails for STI and STM32
- Activate OF_LIVE for ST stm32mp15 boards
- Switch to MCO2 for PHY 50 MHz clock for DHCOM boards
- Correction in stm32prog command on uart: always flush DFU on start command
- Update USB-C power detection algorithm on DK boards

1 files changed, 125 insertions, 109 deletions

diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index df353cb5ec..78362d24a2 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -2,6 +2,9 @@
 /*
  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
  */
+
+#define LOG_CATEGORY LOGC_BOARD
+
 #include <common.h>
 #include <adc.h>
 #include <bootm.h>
@@ -106,12 +109,11 @@ int checkboard(void)
 	else
 		mode = "basic";
 
-	printf("Board: stm32mp1 in %s mode", mode);
 	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
 				 &fdt_compat_len);
-	if (fdt_compat && fdt_compat_len)
-		printf(" (%s)", fdt_compat);
-	puts("\n");
+
+	log_info("Board: stm32mp1 in %s mode (%s)\n", mode,
+		 fdt_compat && fdt_compat_len ? fdt_compat : "");
 
 	/* display the STMicroelectronics board identification */
 	if (CONFIG_IS_ENABLED(CMD_STBOARD)) {
@@ -122,12 +124,12 @@ int checkboard(void)
 			ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
 					&otp, sizeof(otp));
 		if (ret > 0 && otp)
-			printf("Board: MB%04x Var%d.%d Rev.%c-%02d\n",
-			       otp >> 16,
-			       (otp >> 12) & 0xF,
-			       (otp >> 4) & 0xF,
-			       ((otp >> 8) & 0xF) - 1 + 'A',
-			       otp & 0xF);
+			log_info("Board: MB%04x Var%d.%d Rev.%c-%02d\n",
+				 otp >> 16,
+				 (otp >> 12) & 0xF,
+				 (otp >> 4) & 0xF,
+				 ((otp >> 8) & 0xF) - 1 + 'A',
+				 otp & 0xF);
 	}
 
 	return 0;
@@ -144,17 +146,16 @@ static void board_key_check(void)
 
 	node = ofnode_path("/config");
 	if (!ofnode_valid(node)) {
-		debug("%s: no /config node?\n", __func__);
+		log_debug("no /config node?\n");
 		return;
 	}
 	if (IS_ENABLED(CONFIG_FASTBOOT)) {
 		if (gpio_request_by_name_nodev(node, "st,fastboot-gpios", 0,
 					       &gpio, GPIOD_IS_IN)) {
-			debug("%s: could not find a /config/st,fastboot-gpios\n",
-			      __func__);
+			log_debug("could not find a /config/st,fastboot-gpios\n");
 		} else {
 			if (dm_gpio_get_value(&gpio)) {
-				puts("Fastboot key pressed, ");
+				log_notice("Fastboot key pressed, ");
 				boot_mode = BOOT_FASTBOOT;
 			}
 
@@ -164,18 +165,17 @@ static void board_key_check(void)
 	if (IS_ENABLED(CONFIG_CMD_STM32PROG)) {
 		if (gpio_request_by_name_nodev(node, "st,stm32prog-gpios", 0,
 					       &gpio, GPIOD_IS_IN)) {
-			debug("%s: could not find a /config/st,stm32prog-gpios\n",
-			      __func__);
+			log_debug("could not find a /config/st,stm32prog-gpios\n");
 		} else {
 			if (dm_gpio_get_value(&gpio)) {
-				puts("STM32Programmer key pressed, ");
+				log_notice("STM32Programmer key pressed, ");
 				boot_mode = BOOT_STM32PROG;
 			}
 			dm_gpio_free(NULL, &gpio);
 		}
 	}
 	if (boot_mode != BOOT_NORMAL) {
-		puts("entering download mode...\n");
+		log_notice("entering download mode...\n");
 		clrsetbits_le32(TAMP_BOOT_CONTEXT,
 				TAMP_BOOT_FORCED_MASK,
 				boot_mode);
@@ -198,8 +198,10 @@ int g_dnl_board_usb_cable_connected(void)
 	ret = uclass_get_device_by_driver(UCLASS_USB_GADGET_GENERIC,
 					  DM_DRIVER_GET(dwc2_udc_otg),
 					  &dwc2_udc_otg);
-	if (!ret)
-		debug("dwc2_udc_otg init failed\n");
+	if (ret) {
+		log_debug("dwc2_udc_otg init failed\n");
+		return ret;
+	}
 
 	return dwc2_udc_B_session_valid(dwc2_udc_otg);
 }
@@ -231,13 +233,12 @@ static int get_led(struct udevice **dev, char *led_string)
 
 	led_name = fdtdec_get_config_string(gd->fdt_blob, led_string);
 	if (!led_name) {
-		pr_debug("%s: could not find %s config string\n",
-			 __func__, led_string);
+		log_debug("could not find %s config string\n", led_string);
 		return -ENOENT;
 	}
 	ret = led_get_by_label(led_name, dev);
 	if (ret) {
-		debug("%s: get=%d\n", __func__, ret);
+		log_debug("get=%d\n", ret);
 		return ret;
 	}
 
@@ -288,49 +289,19 @@ static void __maybe_unused led_error_blink(u32 nb_blink)
 		hang();
 }
 
-static int board_check_usb_power(void)
+static int adc_measurement(ofnode node, int adc_count, int *min_uV, int *max_uV)
 {
 	struct ofnode_phandle_args adc_args;
 	struct udevice *adc;
-	ofnode node;
 	unsigned int raw;
-	int max_uV = 0;
-	int min_uV = USB_START_HIGH_THRESHOLD_UV;
-	int ret, uV, adc_count;
-	u32 nb_blink;
-	u8 i;
-
-	if (!IS_ENABLED(CONFIG_ADC))
-		return -ENODEV;
-
-	node = ofnode_path("/config");
-	if (!ofnode_valid(node)) {
-		debug("%s: no /config node?\n", __func__);
-		return -ENOENT;
-	}
-
-	/*
-	 * Retrieve the ADC channels devices and get measurement
-	 * for each of them
-	 */
-	adc_count = ofnode_count_phandle_with_args(node, "st,adc_usb_pd",
-						   "#io-channel-cells", 0);
-	if (adc_count < 0) {
-		if (adc_count == -ENOENT)
-			return 0;
-
-		pr_err("%s: can't find adc channel (%d)\n", __func__,
-		       adc_count);
-
-		return adc_count;
-	}
+	int ret, uV;
+	int i;
 
 	for (i = 0; i < adc_count; i++) {
 		if (ofnode_parse_phandle_with_args(node, "st,adc_usb_pd",
 						   "#io-channel-cells", 0, i,
 						   &adc_args)) {
-			pr_debug("%s: can't find /config/st,adc_usb_pd\n",
-				 __func__);
+			log_debug("can't find /config/st,adc_usb_pd\n");
 			return 0;
 		}
 
@@ -338,44 +309,91 @@ static int board_check_usb_power(void)
 						  &adc);
 
 		if (ret) {
-			pr_err("%s: Can't get adc device(%d)\n", __func__,
-			       ret);
+			log_err("Can't get adc device(%d)\n", ret);
 			return ret;
 		}
 
 		ret = adc_channel_single_shot(adc->name, adc_args.args[0],
 					      &raw);
 		if (ret) {
-			pr_err("%s: single shot failed for %s[%d]!\n",
-			       __func__, adc->name, adc_args.args[0]);
+			log_err("single shot failed for %s[%d]!\n",
+				adc->name, adc_args.args[0]);
 			return ret;
 		}
 		/* Convert to uV */
 		if (!adc_raw_to_uV(adc, raw, &uV)) {
-			if (uV > max_uV)
-				max_uV = uV;
-			if (uV < min_uV)
-				min_uV = uV;
-			pr_debug("%s: %s[%02d] = %u, %d uV\n", __func__,
-				 adc->name, adc_args.args[0], raw, uV);
+			if (uV > *max_uV)
+				*max_uV = uV;
+			if (uV < *min_uV)
+				*min_uV = uV;
+			log_debug("%s[%02d] = %u, %d uV\n",
+				  adc->name, adc_args.args[0], raw, uV);
 		} else {
-			pr_err("%s: Can't get uV value for %s[%d]\n",
-			       __func__, adc->name, adc_args.args[0]);
+			log_err("Can't get uV value for %s[%d]\n",
+				adc->name, adc_args.args[0]);
 		}
 	}
 
+	return 0;
+}
+
+static int board_check_usb_power(void)
+{
+	ofnode node;
+	int max_uV = 0;
+	int min_uV = USB_START_HIGH_THRESHOLD_UV;
+	int adc_count, ret;
+	u32 nb_blink;
+	u8 i;
+
+	node = ofnode_path("/config");
+	if (!ofnode_valid(node)) {
+		log_debug("no /config node?\n");
+		return -ENOENT;
+	}
+
 	/*
-	 * If highest value is inside 1.23 Volts and 2.10 Volts, that means
-	 * board is plugged on an USB-C 3A power supply and boot process can
-	 * continue.
+	 * Retrieve the ADC channels devices and get measurement
+	 * for each of them
 	 */
-	if (max_uV > USB_START_LOW_THRESHOLD_UV &&
-	    max_uV <= USB_START_HIGH_THRESHOLD_UV &&
-	    min_uV <= USB_LOW_THRESHOLD_UV)
-		return 0;
+	adc_count = ofnode_count_phandle_with_args(node, "st,adc_usb_pd",
+						   "#io-channel-cells", 0);
+	if (adc_count < 0) {
+		if (adc_count == -ENOENT)
+			return 0;
+
+		log_err("Can't find adc channel (%d)\n", adc_count);
+
+		return adc_count;
+	}
 
-	pr_err("****************************************************\n");
+	/* perform maximum of 2 ADC measurements to detect power supply current */
+	for (i = 0; i < 2; i++) {
+		if (IS_ENABLED(CONFIG_ADC))
+			ret = adc_measurement(node, adc_count, &min_uV, &max_uV);
+		else
+			ret = -ENODEV;
+
+		if (ret)
+			return ret;
+
+		/*
+		 * If highest value is inside 1.23 Volts and 2.10 Volts, that means
+		 * board is plugged on an USB-C 3A power supply and boot process can
+		 * continue.
+		 */
+		if (max_uV > USB_START_LOW_THRESHOLD_UV &&
+		    max_uV <= USB_START_HIGH_THRESHOLD_UV &&
+		    min_uV <= USB_LOW_THRESHOLD_UV)
+			return 0;
+
+		if (i == 0) {
+			log_err("Previous ADC measurements was not the one expected, retry in 20ms\n");
+			mdelay(20);  /* equal to max tPDDebounce duration (min 10ms - max 20ms) */
+		}
+	}
 
+	log_notice("****************************************************\n");
 	/*
 	 * If highest and lowest value are either both below
 	 * USB_LOW_THRESHOLD_UV or both above USB_LOW_THRESHOLD_UV, that
@@ -386,8 +404,8 @@ static int board_check_usb_power(void)
 	     min_uV > USB_LOW_THRESHOLD_UV) ||
 	     (max_uV <= USB_LOW_THRESHOLD_UV &&
 	     min_uV <= USB_LOW_THRESHOLD_UV)) {
-		pr_err("* ERROR USB TYPE-C connection in unattached mode   *\n");
-		pr_err("* Check that USB TYPE-C cable is correctly plugged *\n");
+		log_notice("* ERROR USB TYPE-C connection in unattached mode   *\n");
+		log_notice("* Check that USB TYPE-C cable is correctly plugged *\n");
 		/* with 125ms interval, led will blink for 17.02 years ....*/
 		nb_blink = U32_MAX;
 	}
@@ -395,14 +413,14 @@ static int board_check_usb_power(void)
 	if (max_uV > USB_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_WARNING_LOW_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV) {
-		pr_err("*        WARNING 500mA power supply detected       *\n");
+		log_notice("*        WARNING 500mA power supply detected       *\n");
 		nb_blink = 2;
 	}
 
 	if (max_uV > USB_WARNING_LOW_THRESHOLD_UV &&
 	    max_uV <= USB_START_LOW_THRESHOLD_UV &&
 	    min_uV <= USB_LOW_THRESHOLD_UV) {
-		pr_err("*       WARNING 1.5A power supply detected        *\n");
+		log_notice("*       WARNING 1.5A power supply detected        *\n");
 		nb_blink = 3;
 	}
 
@@ -411,14 +429,14 @@ static int board_check_usb_power(void)
 	 * supplies more than 3 Amp, this is not compliant with TypeC specification
 	 */
 	if (max_uV > USB_START_HIGH_THRESHOLD_UV) {
-		pr_err("*      USB TYPE-C charger not compliant with       *\n");
-		pr_err("*                   specification                  *\n");
-		pr_err("****************************************************\n\n");
+		log_notice("*      USB TYPE-C charger not compliant with       *\n");
+		log_notice("*                   specification                  *\n");
+		log_notice("****************************************************\n\n");
 		/* with 125ms interval, led will blink for 17.02 years ....*/
 		nb_blink = U32_MAX;
 	} else {
-		pr_err("*     Current too low, use a 3A power supply!      *\n");
-		pr_err("****************************************************\n\n");
+		log_notice("*     Current too low, use a 3A power supply!      *\n");
+		log_notice("****************************************************\n\n");
 	}
 
 	led_error_blink(nb_blink);
@@ -471,7 +489,7 @@ static void sysconf_init(void)
 						  DM_DRIVER_GET(stm32mp_bsec),
 						  &dev);
 		if (ret) {
-			pr_err("Can't find stm32mp_bsec driver\n");
+			log_err("Can't find stm32mp_bsec driver\n");
 			return;
 		}
 
@@ -494,13 +512,13 @@ static void sysconf_init(void)
 				       syscfg + SYSCFG_IOCTRLSETR);
 
 				if (!otp)
-					pr_err("product_below_2v5=0: HSLVEN protected by HW\n");
+					log_err("product_below_2v5=0: HSLVEN protected by HW\n");
 			} else {
 				if (otp)
-					pr_err("product_below_2v5=1: HSLVEN update is destructive, no update as VDD>2.7V\n");
+					log_err("product_below_2v5=1: HSLVEN update is destructive, no update as VDD>2.7V\n");
 			}
 		} else {
-			debug("VDD unknown");
+			log_debug("VDD unknown");
 		}
 	}
 
@@ -514,7 +532,7 @@ static void sysconf_init(void)
 				 val & SYSCFG_CMPCR_READY,
 				 1000000);
 	if (ret) {
-		pr_err("SYSCFG: I/O compensation failed, timeout.\n");
+		log_err("SYSCFG: I/O compensation failed, timeout.\n");
 		led_error_blink(10);
 	}
 
@@ -533,39 +551,37 @@ static int dk2_i2c1_fix(void)
 
 	node = ofnode_path("/soc/i2c@40012000/hdmi-transmitter@39");
 	if (!ofnode_valid(node)) {
-		pr_debug("%s: no hdmi-transmitter@39 ?\n", __func__);
+		log_debug("no hdmi-transmitter@39 ?\n");
 		return -ENOENT;
 	}
 
 	if (gpio_request_by_name_nodev(node, "reset-gpios", 0,
 				       &hdmi, GPIOD_IS_OUT)) {
-		pr_debug("%s: could not find reset-gpios\n",
-			 __func__);
+		log_debug("could not find reset-gpios\n");
 		return -ENOENT;
 	}
 
 	node = ofnode_path("/soc/i2c@40012000/cs42l51@4a");
 	if (!ofnode_valid(node)) {
-		pr_debug("%s: no cs42l51@4a ?\n", __func__);
+		log_debug("no cs42l51@4a ?\n");
 		return -ENOENT;
 	}
 
 	if (gpio_request_by_name_nodev(node, "reset-gpios", 0,
 				       &audio, GPIOD_IS_OUT)) {
-		pr_debug("%s: could not find reset-gpios\n",
-			 __func__);
+		log_debug("could not find reset-gpios\n");
 		return -ENOENT;
 	}
 
 	/* before power up, insure that HDMI and AUDIO IC is under reset */
 	ret = dm_gpio_set_value(&hdmi, 1);
 	if (ret) {
-		pr_err("%s: can't set_value for hdmi_nrst gpio", __func__);
+		log_err("can't set_value for hdmi_nrst gpio");
 		goto error;
 	}
 	ret = dm_gpio_set_value(&audio, 1);
 	if (ret) {
-		pr_err("%s: can't set_value for audio_nrst gpio", __func__);
+		log_err("can't set_value for audio_nrst gpio");
 		goto error;
 	}
 
@@ -732,7 +748,7 @@ int board_interface_eth_init(struct udevice *dev,
 	case PHY_INTERFACE_MODE_MII:
 		value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII |
 			SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
-		debug("%s: PHY_INTERFACE_MODE_MII\n", __func__);
+		log_debug("PHY_INTERFACE_MODE_MII\n");
 		break;
 	case PHY_INTERFACE_MODE_GMII:
 		if (eth_clk_sel_reg)
@@ -740,7 +756,7 @@ int board_interface_eth_init(struct udevice *dev,
 				SYSCFG_PMCSETR_ETH_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII;
-		debug("%s: PHY_INTERFACE_MODE_GMII\n", __func__);
+		log_debug("PHY_INTERFACE_MODE_GMII\n");
 		break;
 	case PHY_INTERFACE_MODE_RMII:
 		if (eth_ref_clk_sel_reg)
@@ -748,7 +764,7 @@ int board_interface_eth_init(struct udevice *dev,
 				SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_RMII;
-		debug("%s: PHY_INTERFACE_MODE_RMII\n", __func__);
+		log_debug("PHY_INTERFACE_MODE_RMII\n");
 		break;
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
@@ -759,11 +775,11 @@ int board_interface_eth_init(struct udevice *dev,
 				SYSCFG_PMCSETR_ETH_CLK_SEL;
 		else
 			value = SYSCFG_PMCSETR_ETH_SEL_RGMII;
-		debug("%s: PHY_INTERFACE_MODE_RGMII\n", __func__);
+		log_debug("PHY_INTERFACE_MODE_RGMII\n");
 		break;
 	default:
-		debug("%s: Do not manage %d interface\n",
-		      __func__, interface_type);
+		log_debug("Do not manage %d interface\n",
+			  interface_type);
 		/* Do not manage others interfaces */
 		return -EINVAL;
 	}
@@ -878,14 +894,14 @@ static void board_copro_image_process(ulong fw_image, size_t fw_size)
 
 	if (!rproc_is_initialized())
 		if (rproc_init()) {
-			printf("Remote Processor %d initialization failed\n",
-			       id);
+			log_err("Remote Processor %d initialization failed\n",
+				id);
 			return;
 		}
 
 	ret = rproc_load(id, fw_image, fw_size);
-	printf("Load Remote Processor %d with data@addr=0x%08lx %u bytes:%s\n",
-	       id, fw_image, fw_size, ret ? " Failed!" : " Success!");
+	log_err("Load Remote Processor %d with data@addr=0x%08lx %u bytes:%s\n",
+		id, fw_image, fw_size, ret ? " Failed!" : " Success!");
 
 	if (!ret)
 		rproc_start(id);