[PATCH 15/20] imx8ulp: clock: Support to enable/disable the ADC1 clock

[Peng Fan (OSS)]

From: Alice Guo <alice.guo at nxp.com>

This patch implements enable_adc1_clk() to enable or disable the ADC1
clock on i.MX8ULP.

Reviewed-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Alice Guo <alice.guo at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/include/asm/arch-imx8ulp/cgc.h      |  4 +++
 arch/arm/include/asm/arch-imx8ulp/clock.h    |  1 +
 arch/arm/include/asm/arch-imx8ulp/imx-regs.h |  1 +
 arch/arm/include/asm/arch-imx8ulp/pcc.h      |  4 +++
 arch/arm/mach-imx/imx8ulp/clock.c            | 12 +++++++++
 arch/arm/mach-imx/imx8ulp/pcc.c              | 28 +++++++++++++++++++-
 6 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/arch-imx8ulp/cgc.h b/arch/arm/include/asm/arch-imx8ulp/cgc.h
index 745fd7f5e8..e15ef1d6c1 100644
--- a/arch/arm/include/asm/arch-imx8ulp/cgc.h
+++ b/arch/arm/include/asm/arch-imx8ulp/cgc.h
@@ -56,6 +56,10 @@ enum cgc_clk {
 	PLL4_PFD2_DIV2,
 	PLL4_PFD3_DIV1,
 	PLL4_PFD3_DIV2,
+	CM33_BUSCLK,
+	PLL1_VCO_DIV,
+	PLL0_PFD2_DIV,
+	PLL0_PFD1_DIV,
 };
 
 struct cgc1_regs {
diff --git a/arch/arm/include/asm/arch-imx8ulp/clock.h b/arch/arm/include/asm/arch-imx8ulp/clock.h
index cc70284f55..c0f32cc087 100644
--- a/arch/arm/include/asm/arch-imx8ulp/clock.h
+++ b/arch/arm/include/asm/arch-imx8ulp/clock.h
@@ -41,4 +41,5 @@ void cgc1_enet_stamp_sel(u32 clk_src);
 void mxs_set_lcdclk(u32 base_addr, u32 freq_in_khz);
 void reset_lcdclk(void);
 void enable_mipi_dsi_clk(unsigned char enable);
+void enable_adc1_clk(bool enable);
 #endif
diff --git a/arch/arm/include/asm/arch-imx8ulp/imx-regs.h b/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
index af6845cbff..91adc85525 100644
--- a/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
+++ b/arch/arm/include/asm/arch-imx8ulp/imx-regs.h
@@ -30,6 +30,7 @@
 
 #define PCC_XRDC_MGR_ADDR	0x292d00bc
 
+#define PCC1_RBASE		0x28091000
 #define PCC3_RBASE		0x292d0000
 #define PCC4_RBASE		0x29800000
 #define PCC5_RBASE		0x2da70000
diff --git a/arch/arm/include/asm/arch-imx8ulp/pcc.h b/arch/arm/include/asm/arch-imx8ulp/pcc.h
index 468015482b..46386f1aba 100644
--- a/arch/arm/include/asm/arch-imx8ulp/pcc.h
+++ b/arch/arm/include/asm/arch-imx8ulp/pcc.h
@@ -8,6 +8,10 @@
 
 #include <asm/arch/cgc.h>
 
+enum pcc1_entry {
+	ADC1_PCC1_SLOT = 34,
+};
+
 enum pcc3_entry {
 	DMA1_MP_PCC3_SLOT = 1,
 	DMA1_CH0_PCC3_SLOT = 2,
diff --git a/arch/arm/mach-imx/imx8ulp/clock.c b/arch/arm/mach-imx/imx8ulp/clock.c
index d03269ac04..961702310c 100644
--- a/arch/arm/mach-imx/imx8ulp/clock.c
+++ b/arch/arm/mach-imx/imx8ulp/clock.c
@@ -341,6 +341,18 @@ void enable_mipi_dsi_clk(unsigned char enable)
 	}
 }
 
+void enable_adc1_clk(bool enable)
+{
+	if (enable) {
+		pcc_clock_enable(1, ADC1_PCC1_SLOT, false);
+		pcc_clock_sel(1, ADC1_PCC1_SLOT, CM33_BUSCLK);
+		pcc_clock_enable(1, ADC1_PCC1_SLOT, true);
+		pcc_reset_peripheral(1, ADC1_PCC1_SLOT, false);
+	} else {
+		pcc_clock_enable(1, ADC1_PCC1_SLOT, false);
+	}
+}
+
 void reset_lcdclk(void)
 {
 	/* Disable clock and reset dcnano*/
diff --git a/arch/arm/mach-imx/imx8ulp/pcc.c b/arch/arm/mach-imx/imx8ulp/pcc.c
index 6145b3ea6a..7909d770af 100644
--- a/arch/arm/mach-imx/imx8ulp/pcc.c
+++ b/arch/arm/mach-imx/imx8ulp/pcc.c
@@ -15,6 +15,21 @@
 #define cgc_clk_TYPES 2
 #define cgc_clk_NUM 8
 
+static enum cgc_clk pcc1_clksrc[][8] = {
+	{
+	},
+	{
+		DUMMY0_CLK,
+		LPOSC,
+		SOSC_DIV2,
+		FRO_DIV2,
+		CM33_BUSCLK,
+		PLL1_VCO_DIV,
+		PLL0_PFD2_DIV,
+		PLL0_PFD1_DIV,
+	}
+};
+
 static enum cgc_clk pcc3_clksrc[][8] = {
 	{
 	},
@@ -75,6 +90,11 @@ static enum cgc_clk pcc5_clksrc[][8] = {
 	}
 };
 
+static struct pcc_entry pcc1_arrays[] = {
+	{PCC1_RBASE, ADC1_PCC1_SLOT, CLKSRC_PER_BUS, PCC_NO_DIV, PCC_HAS_RST_B},
+	{}
+};
+
 static struct pcc_entry pcc3_arrays[] = {
 	{PCC3_RBASE, DMA1_MP_PCC3_SLOT,		CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
 	{PCC3_RBASE, DMA1_CH0_PCC3_SLOT,	CLKSRC_NO_PCS, PCC_NO_DIV, PCC_NO_RST_B},
@@ -228,6 +248,10 @@ static int find_pcc_entry(int pcc_controller, int pcc_clk_slot, struct pcc_entry
 	int index = 0;
 
 	switch (pcc_controller) {
+	case 1:
+		pcc_array = pcc1_arrays;
+		*out = &pcc1_arrays[0];
+		break;
 	case 3:
 		pcc_array = pcc3_arrays;
 		*out = &pcc3_arrays[0];
@@ -310,7 +334,9 @@ int pcc_clock_sel(int pcc_controller, int pcc_clk_slot, enum cgc_clk src)
 		return -EPERM;
 	}
 
-	if (pcc_controller == 3)
+	if (pcc_controller == 1)
+		cgc_clk_array = pcc1_clksrc[clksrc_type];
+	else if (pcc_controller == 3)
 		cgc_clk_array = pcc3_clksrc[clksrc_type];
 	else if (pcc_controller == 4)
 		cgc_clk_array = pcc4_clksrc[clksrc_type];
-- 
2.30.0