Merge tag 'u-boot-at91-fixes-2023.10-a' of https://source.denx.de/u-boot/custodians/u-boot-at91

First set of u-boot-atmel fixes for the 2023.07 cycle:

This small fixes set includes the LTO configs for the boards that had
the SPL size up to the limit (sama5d2-based), such that more code can be
added.  It also includes a fix for mmc non-removable.

configs/sama5d2_icp_mmc_defconfig

@@ -27,6 +27,7 @@ CONFIG_SPL_FS_FAT=y
 CONFIG_SPL_LIBDISK_SUPPORT=y
 CONFIG_SYS_LOAD_ADDR=0x22000000
 CONFIG_DEBUG_UART=y
+CONFIG_LTO=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
 CONFIG_SD_BOOT=y

configs/sama5d2_xplained_emmc_defconfig

@@ -28,6 +28,7 @@ CONFIG_SPL_FS_FAT=y
 CONFIG_SPL_LIBDISK_SUPPORT=y
 CONFIG_SYS_LOAD_ADDR=0x22000000
 CONFIG_DEBUG_UART=y
+CONFIG_LTO=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
 CONFIG_SD_BOOT=y

configs/sama5d2_xplained_mmc_defconfig

@@ -29,6 +29,7 @@ CONFIG_SPL_FS_FAT=y
 CONFIG_SPL_LIBDISK_SUPPORT=y
 CONFIG_SYS_LOAD_ADDR=0x22000000
 CONFIG_DEBUG_UART=y
+CONFIG_LTO=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
 CONFIG_SD_BOOT=y

configs/sama5d2_xplained_qspiflash_defconfig

@@ -29,6 +29,7 @@ CONFIG_SPL_FS_FAT=y
 CONFIG_SPL_LIBDISK_SUPPORT=y
 CONFIG_SYS_LOAD_ADDR=0x22000000
 CONFIG_DEBUG_UART=y
+CONFIG_LTO=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
 CONFIG_QSPI_BOOT=y

configs/sama5d2_xplained_spiflash_defconfig

@@ -31,6 +31,7 @@ CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI=y
 CONFIG_SYS_LOAD_ADDR=0x22000000
 CONFIG_DEBUG_UART=y
+CONFIG_LTO=y
 CONFIG_ENV_VARS_UBOOT_CONFIG=y
 CONFIG_FIT=y
 CONFIG_SPI_BOOT=y

drivers/mmc/atmel_sdhci.c

@@ -15,6 +15,9 @@
 #define ATMEL_SDHC_MIN_FREQ	400000
 #define ATMEL_SDHC_GCK_RATE	240000000
 
+#define ATMEL_SDHC_MC1R 0x204
+#define ATMEL_SDHC_MC1R_FCD	0x80
+
 #ifndef CONFIG_DM_MMC
 int atmel_sdhci_init(void *regbase, u32 id)
 {
@@ -52,11 +55,37 @@ struct atmel_sdhci_plat {
 	struct mmc mmc;
 };
 
+static void atmel_sdhci_config_fcd(struct sdhci_host *host)
+{
+	u8 mc1r;
+
+	/* If nonremovable, assume that the card is always present.
+	 *
+	 * WA: SAMA5D2 doesn't drive CMD if using CD GPIO line.
+	 */
+	if ((host->mmc->cfg->host_caps & MMC_CAP_NONREMOVABLE)
+#if CONFIG_IS_ENABLED(DM_GPIO)
+		|| dm_gpio_get_value(&host->cd_gpio) >= 0
+#endif
+	   ) {
+		sdhci_readb(host, ATMEL_SDHC_MC1R);
+		mc1r |= ATMEL_SDHC_MC1R_FCD;
+		sdhci_writeb(host, mc1r, ATMEL_SDHC_MC1R);
+	}
+}
+
 static int atmel_sdhci_deferred_probe(struct sdhci_host *host)
 {
 	struct udevice *dev = host->mmc->dev;
+	int ret;
 
-	return sdhci_probe(dev);
+	ret = sdhci_probe(dev);
+	if (ret)
+		return ret;
+
+	atmel_sdhci_config_fcd(host);
+
+	return 0;
 }
 
 static const struct sdhci_ops atmel_sdhci_ops = {
@@ -120,7 +149,13 @@ static int atmel_sdhci_probe(struct udevice *dev)
 
 	clk_free(&clk);
 
-	return sdhci_probe(dev);
+	ret = sdhci_probe(dev);
+	if (ret)
+		return ret;
+
+	atmel_sdhci_config_fcd(host);
+
+	return 0;
 }
 
 static int atmel_sdhci_bind(struct udevice *dev)