[PATCH 7/9] clk: renesas: r9a07g044: Add M4 Clock support

[Biju Das <biju.das.jz@xxxxxxxxxxxxxx>]

Add support for M4 clock which is sourced from pll2_533_div2.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
RFC->V1:
 * Added Rb tag from Geert
---
 drivers/clk/renesas/r9a07g044-cpg.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index cee552bdf3cc..66608696d2e2 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -57,6 +57,9 @@ enum clk_ids {
 	CLK_SEL_GPU2,
 	CLK_SEL_PLL5_4,
 	CLK_DSI_DIV,
+	CLK_PLL2_533,
+	CLK_PLL2_533_DIV2,
+	CLK_DIV_DSI_LPCLK,
 
 	/* Module Clocks */
 	MOD_CLK_BASE,
@@ -80,6 +83,14 @@ static const struct clk_div_table dtable_1_32[] = {
 	{0, 0},
 };
 
+static const struct clk_div_table dtable_16_128[] = {
+	{0, 16},
+	{1, 32},
+	{2, 64},
+	{3, 128},
+	{0, 0},
+};
+
 /* Mux clock tables */
 static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" };
 static const char * const sel_pll5_4[] = { ".pll5_foutpostdiv", ".pll5_fout1ph0" };
@@ -88,7 +99,7 @@ static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 static const char * const sel_gpu2[] = { ".pll6", ".pll3_div2_2" };
 
 static const struct {
-	struct cpg_core_clk common[52];
+	struct cpg_core_clk common[56];
 #ifdef CONFIG_CLK_R9A07G054
 	struct cpg_core_clk drp[0];
 #endif
@@ -102,6 +113,7 @@ static const struct {
 		DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
 		DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)),
 		DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
+		DEF_FIXED(".pll2_533", CLK_PLL2_533, CLK_PLL2, 1, 3),
 		DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
 		DEF_FIXED(".pll3_400", CLK_PLL3_400, CLK_PLL3, 1, 4),
 		DEF_FIXED(".pll3_533", CLK_PLL3_533, CLK_PLL3, 1, 3),
@@ -120,6 +132,8 @@ static const struct {
 		DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
 		DEF_FIXED(".pll2_div2_10", CLK_PLL2_DIV2_10, CLK_PLL2_DIV2, 1, 10),
 
+		DEF_FIXED(".pll2_533_div2", CLK_PLL2_533_DIV2, CLK_PLL2_533, 1, 2),
+
 		DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
 		DEF_FIXED(".pll3_div2_2", CLK_PLL3_DIV2_2, CLK_PLL3_DIV2, 1, 2),
 		DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
@@ -137,6 +151,8 @@ static const struct {
 		DEF_FIXED(".pll5_fout1ph0", CLK_PLL5_FOUT1PH0, CLK_PLL5_FOUTPOSTDIV, 1, 2),
 		DEF_PLL5_4_MUX(".sel_pll5_4", CLK_SEL_PLL5_4, SEL_PLL5_4,
 			       sel_pll5_4, ARRAY_SIZE(sel_pll5_4)),
+		DEF_DIV(".div_dsi_lpclk", CLK_DIV_DSI_LPCLK, CLK_PLL2_533_DIV2,
+			DIVDSILPCLK, dtable_16_128, CLK_DIVIDER_HIWORD_MASK),
 
 		/* Core output clk */
 		DEF_DIV("I", R9A07G044_CLK_I, CLK_PLL1, DIVPL1A, dtable_1_8,
@@ -169,6 +185,7 @@ static const struct {
 		DEF_FIXED("M2_DIV2", CLK_M2_DIV2, R9A07G044_CLK_M2, 1, 2),
 		DEF_DSI_DIV("DSI_DIV", CLK_DSI_DIV, CLK_SEL_PLL5_4, CLK_SET_RATE_PARENT),
 		DEF_FIXED("M3", R9A07G044_CLK_M3, CLK_DSI_DIV, 1, 1),
+		DEF_FIXED("M4", R9A07G044_CLK_M4, CLK_DIV_DSI_LPCLK, 1, 1),
 	},
 #ifdef CONFIG_CLK_R9A07G054
 	.drp = {
-- 
2.17.1