[3/8] clock_imx8mm: Add enable_usboh3_clk() for i.MX8M
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Message ID 20220520082623.1788887-4-tommaso.merciai@amarulasolutions.com
State New
Headers show
Series
  • imx8mm: Add serial download support
Related show

Commit Message

Tommaso Merciai May 20, 2022, 8:26 a.m. UTC 
Currently we can't use DM_USB in SPL as the ci_udc driver is not
ported to DM yet.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
---
 arch/arm/include/asm/arch-imx8m/clock.h |  1 +
 arch/arm/mach-imx/imx8m/clock_imx8mm.c  | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

Patch
diff mbox series 

diff --git a/arch/arm/include/asm/arch-imx8m/clock.h b/arch/arm/include/asm/arch-imx8m/clock.h
index e4433763bc..bb93c7c61c 100644
--- a/arch/arm/include/asm/arch-imx8m/clock.h
+++ b/arch/arm/include/asm/arch-imx8m/clock.h
@@ -278,3 +278,4 @@  int enable_i2c_clk(unsigned char enable, unsigned int i2c_num);
 int set_clk_enet(enum enet_freq type);
 int set_clk_eqos(enum enet_freq type);
 void hab_caam_clock_enable(unsigned char enable);
+void enable_usboh3_clk(unsigned int enable);
diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 4db55f8608..4b891c6a94 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
@@ -298,6 +298,22 @@  int intpll_configure(enum pll_clocks pll, ulong freq)
 	return 0;
 }
 
+void enable_usboh3_clk(unsigned int enable)
+{
+	if (enable) {
+		clock_enable(CCGR_USB_MSCALE_PL301, 0);
+		/* 500M */
+		clock_set_target_val(USB_BUS_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
+		/* 100M */
+		clock_set_target_val(USB_CORE_REF_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
+		/* 100M */
+		clock_set_target_val(USB_PHY_REF_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(1));
+		clock_enable(CCGR_USB_MSCALE_PL301, 1);
+	} else {
+		clock_enable(CCGR_USB_MSCALE_PL301, 0);
+	}
+}
+
 void init_uart_clk(u32 index)
 {
 	/*