diff --git a/src/mainboard/google/rush/bootblock.c b/src/mainboard/google/rush/bootblock.c
index 4df915edf9..17372bd86d 100644
--- a/src/mainboard/google/rush/bootblock.c
+++ b/src/mainboard/google/rush/bootblock.c
@@ -33,8 +33,8 @@
 static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
 
 static const struct pad_config uart_console_pads[] = {
-	/* Hard coded pad usage for UARTA. */
-	PAD_CFG_SFIO(KB_ROW9, 0, UA3),
+	/* UARTA: tx and rx. */
+	PAD_CFG_SFIO(KB_ROW9, PINMUX_PULL_NONE, UA3),
 	PAD_CFG_SFIO(KB_ROW10, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UA3),
 	/*
 	 * Disable UART2 pads as they are default connected to UARTA controller.
@@ -71,8 +71,6 @@ static void set_clock_sources(void)
 	/* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */
 	writel(PLLP << CLK_SOURCE_SHIFT, &clk_rst->clk_src_uarta);
 
-	clock_configure_source(mselect, PLLP, 102000);
-
 	/* The PMIC is on I2C5 and can run at 400 KHz. */
 	clock_configure_i2c_scl_freq(i2c5, PLLP, 400);
 
@@ -85,9 +83,8 @@ void bootblock_mainboard_init(void)
 {
 	set_clock_sources();
 
-	clock_enable_clear_reset(CLK_L_CACHE2 | CLK_L_TMR,
-				 CLK_H_I2C5 | CLK_H_APBDMA,
-				 0, CLK_V_MSELECT, 0, 0);
+	/* Enable PMIC I2C controller. */
+	clock_enable_clear_reset(0, CLK_H_I2C5, 0, 0, 0, 0);
 
 	/* Set up the pads required to load romstage. */
 	soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
diff --git a/src/mainboard/google/rush_ryu/bootblock.c b/src/mainboard/google/rush_ryu/bootblock.c
index a9de44ade1..e5975d2dbc 100644
--- a/src/mainboard/google/rush_ryu/bootblock.c
+++ b/src/mainboard/google/rush_ryu/bootblock.c
@@ -33,8 +33,8 @@
 static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
 
 static const struct pad_config uart_console_pads[] = {
-	/* Hard coded pad usage for UARTA. */
-	PAD_CFG_SFIO(KB_ROW9, 0, UA3),
+	/* UARTA: tx and rx. */
+	PAD_CFG_SFIO(KB_ROW9, PINMUX_PULL_NONE, UA3),
 	PAD_CFG_SFIO(KB_ROW10, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UA3),
 	/*
 	 * Disable UART2 pads as they are default connected to UARTA controller.
@@ -83,9 +83,8 @@ void bootblock_mainboard_init(void)
 {
 	set_clock_sources();
 
-	clock_enable_clear_reset(CLK_L_CACHE2 | CLK_L_TMR,
-				 CLK_H_I2C5 | CLK_H_APBDMA,
-				 0, CLK_V_MSELECT, 0, 0);
+	/* Enable PMIC I2C controller. */
+	clock_enable_clear_reset(0, CLK_H_I2C5, 0, 0, 0, 0);
 
 	/* Set up the pads required to load romstage. */
 	soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs));
diff --git a/src/soc/nvidia/tegra132/bootblock.c b/src/soc/nvidia/tegra132/bootblock.c
index fc4c5cd4f1..20a66a7b91 100644
--- a/src/soc/nvidia/tegra132/bootblock.c
+++ b/src/soc/nvidia/tegra132/bootblock.c
@@ -22,6 +22,7 @@
 #include <bootblock_common.h>
 #include <console/console.h>
 #include <program_loading.h>
+#include <soc/addressmap.h>
 #include <soc/bootblock.h>
 #include <soc/clock.h>
 #include <soc/nvidia/tegra/apbmisc.h>
@@ -33,6 +34,8 @@ void __attribute__((weak)) bootblock_mainboard_early_init(void)
 	/* Empty default implementation. */
 }
 
+static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
+
 void main(void)
 {
 	// enable pinmux clamp inputs
@@ -43,6 +46,14 @@ void main(void)
 
 	clock_early_uart();
 
+	/* Configure mselect clock. */
+	clock_configure_source(mselect, PLLP, 102000);
+
+	/* Enable AVP cache, timer, APB dma, and mselect blocks.  */
+	clock_enable_clear_reset(CLK_L_CACHE2 | CLK_L_TMR,
+				 CLK_H_APBDMA,
+				 0, CLK_V_MSELECT, 0, 0);
+
 	bootblock_mainboard_early_init();
 
 	if (CONFIG_BOOTBLOCK_CONSOLE) {