linux-kernel - Re: [PATCH 4/8] clk: sunxi-ng: Add support for the Allwinner H616 R-CCU

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Message-ID: <422A0729-7E7C-4ABF-BEAB-21772FDD0CE3@aosc.io>
Date:   Wed, 02 Dec 2020 22:31:42 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Andre Przywara <andre.przywara@....com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>
CC:     Icenowy Zheng <icenowy@...c.xyz>,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Yangtao Li <frank@...winnertech.com>,
        linux-kernel@...r.kernel.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH 4/8] clk: sunxi-ng: Add support for the Allwinner H616 R-CCU



于 2020年12月2日 GMT+08:00 下午9:54:05, Andre Przywara <andre.przywara@....com> 写到:
>The clocks itself are identical to the H6 R-CCU, it's just that the
>H616
>has not all of them implemented (or connected).

For selective clocks, try to follow the practice of V3(s) driver?

>
>Signed-off-by: Andre Przywara <andre.przywara@....com>
>---
> drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c | 47 +++++++++++++++++++++++++-
> drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h |  3 +-
> 2 files changed, 48 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c
>b/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c
>index 50f8d1bc7046..119d1797f501 100644
>--- a/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c
>+++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c
>@@ -136,6 +136,15 @@ static struct ccu_common *sun50i_h6_r_ccu_clks[] =
>{
> 	&w1_clk.common,
> };
> 
>+static struct ccu_common *sun50i_h616_r_ccu_clks[] = {
>+	&r_apb1_clk.common,
>+	&r_apb2_clk.common,
>+	&r_apb1_twd_clk.common,
>+	&r_apb2_i2c_clk.common,
>+	&r_apb1_ir_clk.common,
>+	&ir_clk.common,
>+};
>+
> static struct clk_hw_onecell_data sun50i_h6_r_hw_clks = {
> 	.hws	= {
> 		[CLK_AR100]		= &ar100_clk.common.hw,
>@@ -152,7 +161,20 @@ static struct clk_hw_onecell_data
>sun50i_h6_r_hw_clks = {
> 		[CLK_IR]		= &ir_clk.common.hw,
> 		[CLK_W1]		= &w1_clk.common.hw,
> 	},
>-	.num	= CLK_NUMBER,
>+	.num	= CLK_NUMBER_H616,
>+};
>+
>+static struct clk_hw_onecell_data sun50i_h616_r_hw_clks = {
>+	.hws	= {
>+		[CLK_R_AHB]		= &r_ahb_clk.hw,
>+		[CLK_R_APB1]		= &r_apb1_clk.common.hw,
>+		[CLK_R_APB2]		= &r_apb2_clk.common.hw,
>+		[CLK_R_APB1_TWD]	= &r_apb1_twd_clk.common.hw,
>+		[CLK_R_APB2_I2C]	= &r_apb2_i2c_clk.common.hw,
>+		[CLK_R_APB1_IR]		= &r_apb1_ir_clk.common.hw,
>+		[CLK_IR]		= &ir_clk.common.hw,
>+	},
>+	.num	= CLK_NUMBER_H616,
> };
> 
> static struct ccu_reset_map sun50i_h6_r_ccu_resets[] = {
>@@ -165,6 +187,12 @@ static struct ccu_reset_map
>sun50i_h6_r_ccu_resets[] = {
> 	[RST_R_APB1_W1]		=  { 0x1ec, BIT(16) },
> };
> 
>+static struct ccu_reset_map sun50i_h616_r_ccu_resets[] = {
>+	[RST_R_APB1_TWD]	=  { 0x12c, BIT(16) },
>+	[RST_R_APB2_I2C]	=  { 0x19c, BIT(16) },
>+	[RST_R_APB1_IR]		=  { 0x1cc, BIT(16) },
>+};
>+
> static const struct sunxi_ccu_desc sun50i_h6_r_ccu_desc = {
> 	.ccu_clks	= sun50i_h6_r_ccu_clks,
> 	.num_ccu_clks	= ARRAY_SIZE(sun50i_h6_r_ccu_clks),
>@@ -175,6 +203,16 @@ static const struct sunxi_ccu_desc
>sun50i_h6_r_ccu_desc = {
> 	.num_resets	= ARRAY_SIZE(sun50i_h6_r_ccu_resets),
> };
> 
>+static const struct sunxi_ccu_desc sun50i_h616_r_ccu_desc = {
>+	.ccu_clks	= sun50i_h616_r_ccu_clks,
>+	.num_ccu_clks	= ARRAY_SIZE(sun50i_h616_r_ccu_clks),
>+
>+	.hw_clks	= &sun50i_h616_r_hw_clks,
>+
>+	.resets		= sun50i_h616_r_ccu_resets,
>+	.num_resets	= ARRAY_SIZE(sun50i_h616_r_ccu_resets),
>+};
>+
> static void __init sunxi_r_ccu_init(struct device_node *node,
> 				    const struct sunxi_ccu_desc *desc)
> {
>@@ -195,3 +233,10 @@ static void __init sun50i_h6_r_ccu_setup(struct
>device_node *node)
> }
> CLK_OF_DECLARE(sun50i_h6_r_ccu, "allwinner,sun50i-h6-r-ccu",
> 	       sun50i_h6_r_ccu_setup);
>+
>+static void __init sun50i_h616_r_ccu_setup(struct device_node *node)
>+{
>+	sunxi_r_ccu_init(node, &sun50i_h616_r_ccu_desc);
>+}
>+CLK_OF_DECLARE(sun50i_h616_r_ccu, "allwinner,sun50i-h616-r-ccu",
>+	       sun50i_h616_r_ccu_setup);
>diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h
>b/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h
>index 782117dc0b28..128302696ca1 100644
>--- a/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h
>+++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6-r.h
>@@ -14,6 +14,7 @@
> 
> #define CLK_R_APB2	3
> 
>-#define CLK_NUMBER	(CLK_W1 + 1)
>+#define CLK_NUMBER_H6	(CLK_W1 + 1)
>+#define CLK_NUMBER_H616	(CLK_IR + 1)
> 
> #endif /* _CCU_SUN50I_H6_R_H */