diff mbox series

[v3,2/4] clk: renesas: r9a07g044: Add ethernet clock sources

Message ID 20210815103014.21208-3-biju.das.jz@bp.renesas.com (mailing list archive)
State Superseded, archived
Headers show
Series Add GbEthernet Clock support | expand

Commit Message

Biju Das Aug. 15, 2021, 10:30 a.m. UTC 
Ethernet reference clock can be sourced from PLL5_FOUT3 or PLL6. Add
support for ethernet source clock selection using SEL_PLL_6_2 mux.

This patch also renames the PLL5_DIV2 core clock to PLL5_2_DIV12 to match
with the register description as mentioned in RZ/G2L HW manual (Rev.0.50).

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v2->v3:
 * Replaced CLK_PLL5_2 with PLL5_FOUT3
 * Removed CLK_PLL6_2 and pll6_2 as the clk is sourced from PLL6
 * Updated commit header
v1->v2:
 * Moved SEL_PLL_PACK macro to Mux handling support
 * Renamed PLL5_DIV2 core clock to PLL5_2_DIV12
v1:
 * New patch.
---
 drivers/clk/renesas/r9a07g044-cpg.c | 19 ++++++++++++++++++-
 drivers/clk/renesas/rzg2l-cpg.h     |  3 +++
 2 files changed, 21 insertions(+), 1 deletion(-)

Comments

Geert Uytterhoeven Aug. 23, 2021, 3:22 p.m. UTC | #1 
On Sun, Aug 15, 2021 at 12:30 PM Biju Das <biju.das.jz@bp.renesas.com> wrote:
> Ethernet reference clock can be sourced from PLL5_FOUT3 or PLL6. Add
> support for ethernet source clock selection using SEL_PLL_6_2 mux.
>
> This patch also renames the PLL5_DIV2 core clock to PLL5_2_DIV12 to match
> with the register description as mentioned in RZ/G2L HW manual (Rev.0.50).
>
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert
diff mbox series

Patch

diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index 4c94b94c4125..90bbeb03308c 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -35,8 +35,10 @@  enum clk_ids {
 	CLK_PLL3_DIV4,
 	CLK_PLL4,
 	CLK_PLL5,
-	CLK_PLL5_DIV2,
+	CLK_PLL5_FOUT3,
+	CLK_PLL5_2_DIV12,
 	CLK_PLL6,
+	CLK_PLL6_2_DIV2,
 	CLK_P1_DIV2,
 
 	/* Module Clocks */
@@ -53,6 +55,9 @@  static const struct clk_div_table dtable_1_32[] = {
 	{0, 0},
 };
 
+/* Mux clock tables */
+static const char * const sel_pll6_2[]	= { ".pll6_2_div2", ".pll5_2_div12" };
+
 static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
 	/* External Clock Inputs */
 	DEF_INPUT("extal", CLK_EXTAL),
@@ -64,6 +69,11 @@  static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
 	DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 133, 2),
 	DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 133, 2),
 
+	DEF_FIXED(".pll5", CLK_PLL5, CLK_EXTAL, 125, 1),
+	DEF_FIXED(".pll5_fout3", CLK_PLL5_FOUT3, CLK_PLL5, 1, 6),
+
+	DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
+
 	DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
 	DEF_FIXED(".pll2_div16", CLK_PLL2_DIV16, CLK_PLL2, 1, 16),
 	DEF_FIXED(".pll2_div20", CLK_PLL2_DIV20, CLK_PLL2, 1, 20),
@@ -73,6 +83,9 @@  static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
 	DEF_FIXED(".pll3_div2_4_2", CLK_PLL3_DIV2_4_2, CLK_PLL3_DIV2_4, 1, 2),
 	DEF_FIXED(".pll3_div4", CLK_PLL3_DIV4, CLK_PLL3, 1, 4),
 
+	DEF_FIXED(".pll5_2_div12", CLK_PLL5_2_DIV12, CLK_PLL5_FOUT3, 1, 2),
+	DEF_FIXED(".pll6_2_div2", CLK_PLL6_2_DIV2, CLK_PLL6, 1, 2),
+
 	/* Core output clk */
 	DEF_FIXED("I", R9A07G044_CLK_I, CLK_PLL1, 1, 1),
 	DEF_DIV("P0", R9A07G044_CLK_P0, CLK_PLL2_DIV16, DIVPL2A,
@@ -84,6 +97,10 @@  static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = {
 	DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A07G044_CLK_P1, 1, 2),
 	DEF_DIV("P2", R9A07G044_CLK_P2, CLK_PLL3_DIV2_4_2,
 		DIVPL3A, dtable_1_32, CLK_DIVIDER_HIWORD_MASK),
+	DEF_FIXED("M0", R9A07G044_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
+	DEF_FIXED("ZT", R9A07G044_CLK_ZT, CLK_PLL3_DIV2_4_2, 1, 1),
+	DEF_MUX("HP", R9A07G044_CLK_HP, SEL_PLL6_2,
+		sel_pll6_2, ARRAY_SIZE(sel_pll6_2), 0, CLK_MUX_HIWORD_MASK),
 };
 
 static struct rzg2l_mod_clk r9a07g044_mod_clks[] = {
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index f538ffa3371c..5202c0512483 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -11,6 +11,7 @@ 
 
 #define CPG_PL2_DDIV		(0x204)
 #define CPG_PL3A_DDIV		(0x208)
+#define CPG_PL6_ETH_SSEL	(0x418)
 
 /* n = 0/1/2 for PLL1/4/6 */
 #define CPG_SAMPLL_CLK1(n)	(0x04 + (16 * n))
@@ -27,6 +28,8 @@ 
 #define SEL_PLL_PACK(offset, bitpos, size) \
 		(((offset) << 20) | ((bitpos) << 12) | ((size) << 8))
 
+#define SEL_PLL6_2	SEL_PLL_PACK(CPG_PL6_ETH_SSEL, 0, 1)
+
 /**
  * Definitions of CPG Core Clocks
  *