Tegra30: clocks: Fix clock tables for I2C and other periphs

Add 16-bit divider support (I2C) to periph table, annotate and
correct some entries, and fix clk_id lookup function.

Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 44 insertions, 34 deletions

diff --git a/arch/arm/cpu/tegra30-common/clock.c b/arch/arm/cpu/tegra30-common/clock.c
index 5db9d20..c67a2e1 100644
--- a/arch/arm/cpu/tegra30-common/clock.c
+++ b/arch/arm/cpu/tegra30-common/clock.c
@@ -63,6 +63,7 @@ enum clock_type_id {
 	CLOCK_TYPE_MCPT,
 	CLOCK_TYPE_PCM,
 	CLOCK_TYPE_PCMT,
+	CLOCK_TYPE_PCMT16,
 	CLOCK_TYPE_PDCT,
 	CLOCK_TYPE_ACPT,
 	CLOCK_TYPE_ASPTE,
@@ -114,6 +115,9 @@ static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
 	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC),
 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
 		MASK_BITS_31_30},
+	{ CLK(PERIPH),	CLK(CGENERAL),	CLK(MEMORY),	CLK(OSC),
+		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
+		MASK_BITS_31_30},
 	{ CLK(PERIPH),	CLK(DISPLAY),	CLK(CGENERAL),	CLK(OSC),
 		CLK(NONE),	CLK(NONE),	CLK(NONE),	CLK(NONE),
 		MASK_BITS_31_30},
@@ -146,15 +150,15 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_I2S2,	CLOCK_TYPE_AXPT),
 	TYPE(PERIPHC_SPDIF_OUT,	CLOCK_TYPE_AXPT),
 	TYPE(PERIPHC_SPDIF_IN,	CLOCK_TYPE_PCM),
-	TYPE(PERIPHC_PWM,	CLOCK_TYPE_PCST),
+	TYPE(PERIPHC_PWM,	CLOCK_TYPE_PCST),  /* only PWM uses b29:28 */
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_SBC2,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_SBC3,	CLOCK_TYPE_PCMT),
 
 	/* 0x08 */
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
-	TYPE(PERIPHC_I2C1,	CLOCK_TYPE_PCMT),
-	TYPE(PERIPHC_DVC_I2C,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C1,	CLOCK_TYPE_PCMT16),
+	TYPE(PERIPHC_DVC_I2C,	CLOCK_TYPE_PCMT16),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_SBC1,	CLOCK_TYPE_PCMT),
@@ -177,7 +181,7 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_VFIR,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_EPP,	CLOCK_TYPE_MCPA),
 	TYPE(PERIPHC_MPE,	CLOCK_TYPE_MCPA),
-	TYPE(PERIPHC_MIPI,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_MIPI,	CLOCK_TYPE_PCMT),	/* MIPI base-band HSI */
 	TYPE(PERIPHC_UART1,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_UART2,	CLOCK_TYPE_PCMT),
 
@@ -188,7 +192,7 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_HDMI,	CLOCK_TYPE_PMDACD2T),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_TVDAC,	CLOCK_TYPE_PDCT),
-	TYPE(PERIPHC_I2C2,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C2,	CLOCK_TYPE_PCMT16),
 	TYPE(PERIPHC_EMC,	CLOCK_TYPE_MCPT),
 
 	/* 0x28 */
@@ -198,7 +202,7 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_SBC4,	CLOCK_TYPE_PCMT),
-	TYPE(PERIPHC_I2C3,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C3,	CLOCK_TYPE_PCMT16),
 	TYPE(PERIPHC_SDMMC3,	CLOCK_TYPE_PCMT),
 
 	/* 0x30 */
@@ -211,13 +215,13 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_I2S0,	CLOCK_TYPE_AXPT),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 
-	/* 0x38h */
+	/* 0x38h */		/* Jumps to reg offset 0x3B0h - new for T30 */
 	TYPE(PERIPHC_G3D2,	CLOCK_TYPE_MCPA),
 	TYPE(PERIPHC_MSELECT,	CLOCK_TYPE_PCMT),
-	TYPE(PERIPHC_TSENSOR,	CLOCK_TYPE_PCM),
+	TYPE(PERIPHC_TSENSOR,	CLOCK_TYPE_PCST),	/* s/b PCTS */
 	TYPE(PERIPHC_I2S3,	CLOCK_TYPE_AXPT),
 	TYPE(PERIPHC_I2S4,	CLOCK_TYPE_AXPT),
-	TYPE(PERIPHC_I2C4,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2C4,	CLOCK_TYPE_PCMT16),
 	TYPE(PERIPHC_SBC5,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_SBC6,	CLOCK_TYPE_PCMT),
 
@@ -228,21 +232,25 @@ static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 	TYPE(PERIPHC_DAM1,	CLOCK_TYPE_ACPT),
 	TYPE(PERIPHC_DAM2,	CLOCK_TYPE_ACPT),
 	TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PCMT),
-	TYPE(PERIPHC_ACTMON,	CLOCK_TYPE_PCM),
+	TYPE(PERIPHC_ACTMON,	CLOCK_TYPE_PCST),	/* MASK 31:30 */
 	TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
 
 	/* 0x48 */
 	TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
 	TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
 	TYPE(PERIPHC_NANDSPEED,	CLOCK_TYPE_PCMT),
-	TYPE(PERIPHC_I2CSLOW,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_I2CSLOW,	CLOCK_TYPE_PCST),	/* MASK 31:30 */
 	TYPE(PERIPHC_SYS,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_SPEEDO,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
 
 	/* 0x50 */
-	TYPE(PERIPHC_SATAOOB,	CLOCK_TYPE_PCMT),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_NONE,	CLOCK_TYPE_NONE),
+	TYPE(PERIPHC_SATAOOB,	CLOCK_TYPE_PCMT),	/* offset 0x420h */
 	TYPE(PERIPHC_SATA,	CLOCK_TYPE_PCMT),
 	TYPE(PERIPHC_HDA,	CLOCK_TYPE_PCMT),
 };
@@ -693,6 +701,11 @@ static int get_periph_clock_source(enum periph_id periph_id,
 
 	*mux_bits = clock_source[type][CLOCK_MAX_MUX];
 
+	if (type == CLOCK_TYPE_PCMT16)
+		*divider_bits = 16;
+	else
+		*divider_bits = 8;
+
 	for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
 		if (clock_source[type][mux] == parent)
 			return mux;
@@ -983,35 +996,32 @@ void clock_ll_start_uart(enum periph_id periph_id)
  * the same but we are very cautious so we check that a valid clock ID is
  * provided.
  *
- * @param clk_id	Clock ID according to tegra20 device tree binding
+ * @param clk_id	Clock ID according to tegra30 device tree binding
  * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
  */
 static enum periph_id clk_id_to_periph_id(int clk_id)
 {
-	if (clk_id > 95)
+	if (clk_id > PERIPH_ID_COUNT)
 		return PERIPH_ID_NONE;
 
 	switch (clk_id) {
-	case 1:
-	case 2:
-	case 7:
-	case 10:
-	case 20:
-	case 30:
-	case 35:
-	case 49:
-	case 56:
-	case 74:
-	case 76:
-	case 77:
-	case 78:
-	case 79:
-	case 80:
-	case 81:
-	case 82:
-	case 83:
-	case 91:
-	case 95:
+	case PERIPH_ID_RESERVED3:
+	case PERIPH_ID_RESERVED4:
+	case PERIPH_ID_RESERVED16:
+	case PERIPH_ID_RESERVED24:
+	case PERIPH_ID_RESERVED35:
+	case PERIPH_ID_RESERVED43:
+	case PERIPH_ID_RESERVED45:
+	case PERIPH_ID_RESERVED56:
+	case PERIPH_ID_RESERVED76:
+	case PERIPH_ID_RESERVED77:
+	case PERIPH_ID_RESERVED78:
+	case PERIPH_ID_RESERVED83:
+	case PERIPH_ID_RESERVED89:
+	case PERIPH_ID_RESERVED91:
+	case PERIPH_ID_RESERVED93:
+	case PERIPH_ID_RESERVED94:
+	case PERIPH_ID_RESERVED95:
 		return PERIPH_ID_NONE;
 	default:
 		return clk_id;