linux-kernel - [PATCH 4/4] clk: renesas: r8a774c0: Add RPC clocks

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Date:   Fri, 16 Oct 2020 13:17:09 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Prabhakar <prabhakar.csengg@...il.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 4/4] clk: renesas: r8a774c0: Add RPC clocks

Describe the RPCSRC internal clock and the RPC[D2] clocks derived from it,
as well as the RPC-IF module clock, in the RZ/G2E (R8A774C0) CPG/MSSR
driver.

Inspired by commit 94e3935b5756 ("clk: renesas: r8a77980: Add RPC clocks").

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
---
 drivers/clk/renesas/r8a774c0-cpg-mssr.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/clk/renesas/r8a774c0-cpg-mssr.c b/drivers/clk/renesas/r8a774c0-cpg-mssr.c
index 9fc9fa9e531a..1615b31c32ee 100644
--- a/drivers/clk/renesas/r8a774c0-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a774c0-cpg-mssr.c
@@ -44,6 +44,7 @@ enum clk_ids {
 	CLK_S2,
 	CLK_S3,
 	CLK_SDSRC,
+	CLK_RPCSRC,
 	CLK_RINT,
 	CLK_OCO,
 
@@ -73,6 +74,12 @@ static const struct cpg_core_clk r8a774c0_core_clks[] __initconst = {
 	DEF_FIXED(".s2",       CLK_S2,             CLK_PLL1,       4, 1),
 	DEF_FIXED(".s3",       CLK_S3,             CLK_PLL1,       6, 1),
 	DEF_FIXED(".sdsrc",    CLK_SDSRC,          CLK_PLL1,       2, 1),
+	DEF_BASE(".rpcsrc",    CLK_RPCSRC, CLK_TYPE_GEN3_RPCSRC, CLK_PLL1),
+
+	DEF_BASE("rpc",        R8A774C0_CLK_RPC, CLK_TYPE_GEN3_RPC,
+		 CLK_RPCSRC),
+	DEF_BASE("rpcd2",      R8A774C0_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2,
+		 R8A774C0_CLK_RPC),
 
 	DEF_DIV6_RO(".r",      CLK_RINT,           CLK_EXTAL, CPG_RCKCR, 32),
 
@@ -199,6 +206,7 @@ static const struct mssr_mod_clk r8a774c0_mod_clks[] __initconst = {
 	DEF_MOD("can-fd",		 914,	R8A774C0_CLK_S3D2),
 	DEF_MOD("can-if1",		 915,	R8A774C0_CLK_S3D4),
 	DEF_MOD("can-if0",		 916,	R8A774C0_CLK_S3D4),
+	DEF_MOD("rpc-if",		 917,	R8A774C0_CLK_RPCD2),
 	DEF_MOD("i2c6",			 918,	R8A774C0_CLK_S3D2),
 	DEF_MOD("i2c5",			 919,	R8A774C0_CLK_S3D2),
 	DEF_MOD("i2c-dvfs",		 926,	R8A774C0_CLK_CP),
@@ -275,6 +283,10 @@ static int __init r8a774c0_cpg_mssr_init(struct device *dev)
 	return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode);
 }
 
+static const struct clk_div_table cpg_rpcsrc_div_table[] = {
+	{ 0, 5 }, { 1, 3 }, { 2, 8 }, {3, 2}, {0, 0},
+};
+
 const struct cpg_mssr_info r8a774c0_cpg_mssr_info __initconst = {
 	/* Core Clocks */
 	.core_clks = r8a774c0_core_clks,
@@ -287,6 +299,8 @@ const struct cpg_mssr_info r8a774c0_cpg_mssr_info __initconst = {
 	.num_mod_clks = ARRAY_SIZE(r8a774c0_mod_clks),
 	.num_hw_mod_clks = 12 * 32,
 
+	.cpg_rpcsrc_div_table = cpg_rpcsrc_div_table,
+
 	/* Critical Module Clocks */
 	.crit_mod_clks = r8a774c0_crit_mod_clks,
 	.num_crit_mod_clks = ARRAY_SIZE(r8a774c0_crit_mod_clks),
-- 
2.17.1