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ARM: shmobile: r8a7740: add FSI parent clock support

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r8a7740 FSI can select its parent clock,
and its selection is dependent on platform board.

In order to enable FSI parent selection from platform board,
this patch adds its interface to clock framework.

This patch is based on v1.0 manual

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Kuninori Morimoto 2012-06-12 02:36:58 -07:00 committed by Rafael J. Wysocki
parent ad9f1721c1
commit 69efac9a8b
1 changed files with 31 additions and 0 deletions
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31
arch/arm/mach-shmobile/clock-r8a7740.c
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@ -46,6 +46,7 @@
#define VCLKCR1 0xE6150008
#define VCLKCR2 0xE615000c
#define FRQCRC 0xe61500e0
#define FSIACKCR 0xe6150018
#define PLLC01CR 0xe6150028
#define SUBCKCR 0xe6150080
@ -56,6 +57,7 @@
#define MSTPSR2 0xe6150040
#define MSTPSR3 0xe6150048
#define MSTPSR4 0xe615004c
#define FSIBCKCR 0xe6150090
#define HDMICKCR 0xe6150094
#define SMSTPCR0 0xe6150130
#define SMSTPCR1 0xe6150134
@ -274,6 +276,13 @@ static struct clk usb24_clk = {
.parent = &usb24s_clk,
};
/* External FSIACK/FSIBCK clock */
static struct clk fsiack_clk = {
};
static struct clk fsibck_clk = {
};
struct clk *main_clks[] = {
&extalr_clk,
&extal1_clk,
@ -291,6 +300,8 @@ struct clk *main_clks[] = {
&pllc1_div2_clk,
&usb24s_clk,
&usb24_clk,
&fsiack_clk,
&fsibck_clk,
};
static void div4_kick(struct clk *clk)
@ -320,6 +331,7 @@ static struct clk_div4_table div4_table = {
enum {
DIV6_HDMI,
DIV6_VCLK1, DIV6_VCLK2,
DIV6_FSIA, DIV6_FSIB,
DIV6_REPARENT_NR,
};
@ -337,6 +349,16 @@ static struct clk *vclk_parents[8] = {
[5] = &extalr_clk,
};
static struct clk *fsia_parents[] = {
[0] = &pllc1_div2_clk,
[1] = &fsiack_clk, /* external clock */
};
static struct clk *fsib_parents[] = {
[0] = &pllc1_div2_clk,
[1] = &fsibck_clk, /* external clock */
};
static struct clk div6_reparent_clks[DIV6_REPARENT_NR] = {
[DIV6_HDMI] = SH_CLK_DIV6_EXT(HDMICKCR, 0,
hdmi_parent, ARRAY_SIZE(hdmi_parent), 6, 2),
@ -344,6 +366,10 @@ static struct clk div6_reparent_clks[DIV6_REPARENT_NR] = {
vclk_parents, ARRAY_SIZE(vclk_parents), 12, 3),
[DIV6_VCLK2] = SH_CLK_DIV6_EXT(VCLKCR2, 0,
vclk_parents, ARRAY_SIZE(vclk_parents), 12, 3),
[DIV6_FSIA] = SH_CLK_DIV6_EXT(FSIACKCR, 0,
fsia_parents, ARRAY_SIZE(fsia_parents), 6, 2),
[DIV6_FSIB] = SH_CLK_DIV6_EXT(FSIBCKCR, 0,
fsib_parents, ARRAY_SIZE(fsib_parents), 6, 2),
};
/* HDMI1/2 clock */
@ -503,6 +529,8 @@ static struct clk_lookup lookups[] = {
CLKDEV_CON_ID("hdmi2", &hdmi2_clk),
CLKDEV_CON_ID("video1", &div6_reparent_clks[DIV6_VCLK1]),
CLKDEV_CON_ID("video2", &div6_reparent_clks[DIV6_VCLK2]),
CLKDEV_CON_ID("fsiack", &fsiack_clk),
CLKDEV_CON_ID("fsibck", &fsibck_clk),
/* DIV4 clocks */
CLKDEV_CON_ID("i_clk", &div4_clks[DIV4_I]),
@ -557,6 +585,9 @@ static struct clk_lookup lookups[] = {
CLKDEV_ICK_ID("pci", "renesas_usbhs", &div4_clks[DIV4_USBP]),
CLKDEV_ICK_ID("usb24", "renesas_usbhs", &usb24_clk),
CLKDEV_ICK_ID("ick", "sh-mobile-hdmi", &div6_reparent_clks[DIV6_HDMI]),
CLKDEV_ICK_ID("icka", "sh_fsi2", &div6_reparent_clks[DIV6_FSIA]),
CLKDEV_ICK_ID("ickb", "sh_fsi2", &div6_reparent_clks[DIV6_FSIB]),
};
void __init r8a7740_clock_init(u8 md_ck)