Commit 979a2298 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

clk: renesas: r8a77965: Add OSC EXTAL predivider configuration 



R-Car Gen3 Hardware Manual Rev.0.52 documents the relation between the
MD13 and MD14 mode pins, and the OSC EXTAL predivider, as used by the
OSC and RINT RCLK clocks.  Hence augment the configuration structure
with all documented predivider values.

According to R-Car Gen3 Hardware Manual Rev.1.00, R-Car M3-N does not
have the CPG_RCKCR register.  Change the OSC and RINT clock definitions
to use the OSC EXTAL predivider instead, which is supported on all R-Car
M3-N SoC revisions.

Inspired by a patch in the BSP by Takeshi Kihara
<takeshi.kihara.df@renesas.com>.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent 7b8b9a41

drivers/clk/renesas/r8a77965-cpg-mssr.c

+33 −33
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ static const struct cpg_core_clk r8a77965_core_clks[] __initconst = { 
	DEF_FIXED(".s3",	CLK_S3,			CLK_PLL1_DIV2,	6, 1),

	DEF_FIXED(".sdsrc",	CLK_SDSRC,		CLK_PLL1_DIV2,	2, 1),



	DEF_DIV6_RO(".r",	CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),

	DEF_GEN3_OSC(".r",	CLK_RINT,		CLK_EXTAL,	32),



	/* Core Clock Outputs */

	DEF_BASE("z",		R8A77965_CLK_Z,		CLK_TYPE_GEN3_Z, CLK_PLL0),
@@ -106,7 +106,7 @@ static const struct cpg_core_clk r8a77965_core_clks[] __initconst = { 
	DEF_DIV6P1("mso",	R8A77965_CLK_MSO,	CLK_PLL1_DIV4,	0x014),

	DEF_DIV6P1("hdmi",	R8A77965_CLK_HDMI,	CLK_PLL1_DIV4,	0x250),



	DEF_DIV6_RO("osc",	R8A77965_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8),

	DEF_GEN3_OSC("osc",	R8A77965_CLK_OSC,	CLK_EXTAL,	8),



	DEF_BASE("r",		R8A77965_CLK_R,	CLK_TYPE_GEN3_R, CLK_RINT),

};
@@ -253,25 +253,25 @@ static const unsigned int r8a77965_crit_mod_clks[] __initconst = { 
 */



/*

 *   MD		EXTAL		PLL0	PLL1	PLL3	PLL4

 *   MD		EXTAL		PLL0	PLL1	PLL3	PLL4	OSC

 * 14 13 19 17	(MHz)

 *-----------------------------------------------------------

 * 0  0  0  0	16.66 x 1	x180	x192	x192	x144

 * 0  0  0  1	16.66 x 1	x180	x192	x128	x144

 *-----------------------------------------------------------------

 * 0  0  0  0	16.66 x 1	x180	x192	x192	x144	/16

 * 0  0  0  1	16.66 x 1	x180	x192	x128	x144	/16

 * 0  0  1  0	Prohibited setting

 * 0  0  1  1	16.66 x 1	x180	x192	x192	x144

 * 0  1  0  0	20    x 1	x150	x160	x160	x120

 * 0  1  0  1	20    x 1	x150	x160	x106	x120

 * 0  0  1  1	16.66 x 1	x180	x192	x192	x144	/16

 * 0  1  0  0	20    x 1	x150	x160	x160	x120	/19

 * 0  1  0  1	20    x 1	x150	x160	x106	x120	/19

 * 0  1  1  0	Prohibited setting

 * 0  1  1  1	20    x 1	x150	x160	x160	x120

 * 1  0  0  0	25    x 1	x120	x128	x128	x96

 * 1  0  0  1	25    x 1	x120	x128	x84	x96

 * 0  1  1  1	20    x 1	x150	x160	x160	x120	/19

 * 1  0  0  0	25    x 1	x120	x128	x128	x96	/24

 * 1  0  0  1	25    x 1	x120	x128	x84	x96	/24

 * 1  0  1  0	Prohibited setting

 * 1  0  1  1	25    x 1	x120	x128	x128	x96

 * 1  1  0  0	33.33 / 2	x180	x192	x192	x144

 * 1  1  0  1	33.33 / 2	x180	x192	x128	x144

 * 1  0  1  1	25    x 1	x120	x128	x128	x96	/24

 * 1  1  0  0	33.33 / 2	x180	x192	x192	x144	/32

 * 1  1  0  1	33.33 / 2	x180	x192	x128	x144	/32

 * 1  1  1  0	Prohibited setting

 * 1  1  1  1	33.33 / 2	x180	x192	x192	x144

 * 1  1  1  1	33.33 / 2	x180	x192	x192	x144	/32

 */

#define CPG_PLL_CONFIG_INDEX(md)	((((md) & BIT(14)) >> 11) | \

					 (((md) & BIT(13)) >> 11) | \
@@ -279,23 +279,23 @@ static const unsigned int r8a77965_crit_mod_clks[] __initconst = { 
					 (((md) & BIT(17)) >> 17))



static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {

	/* EXTAL div	PLL1 mult/div	PLL3 mult/div */

	{ 1,		192,	1,	192,	1,	},

	{ 1,		192,	1,	128,	1,	},

	/* EXTAL div	PLL1 mult/div	PLL3 mult/div	OSC prediv */

	{ 1,		192,	1,	192,	1,	16,	},

	{ 1,		192,	1,	128,	1,	16,	},

	{ 0, /* Prohibited setting */				},

	{ 1,		192,	1,	192,	1,	},

	{ 1,		160,	1,	160,	1,	},

	{ 1,		160,	1,	106,	1,	},

	{ 1,		192,	1,	192,	1,	16,	},

	{ 1,		160,	1,	160,	1,	19,	},

	{ 1,		160,	1,	106,	1,	19,	},

	{ 0, /* Prohibited setting */				},

	{ 1,		160,	1,	160,	1,	},

	{ 1,		128,	1,	128,	1,	},

	{ 1,		128,	1,	84,	1,	},

	{ 1,		160,	1,	160,	1,	19,	},

	{ 1,		128,	1,	128,	1,	24,	},

	{ 1,		128,	1,	84,	1,	24,	},

	{ 0, /* Prohibited setting */				},

	{ 1,		128,	1,	128,	1,	},

	{ 2,		192,	1,	192,	1,	},

	{ 2,		192,	1,	128,	1,	},

	{ 1,		128,	1,	128,	1,	24,	},

	{ 2,		192,	1,	192,	1,	32,	},

	{ 2,		192,	1,	128,	1,	32,	},

	{ 0, /* Prohibited setting */				},

	{ 2,		192,	1,	192,	1,	},

	{ 2,		192,	1,	192,	1,	32,	},

};



static int __init r8a77965_cpg_mssr_init(struct device *dev)

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