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OMAP4: clock: Add dummy clock nodes for interface clocks

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On OMAP4 platform the iclk control is completly under hardware control
and no software control is available.

This difference w.r.t previous OMAP's needs all the common driver
accross OMAP's , cpu_is_xxxx() checks. To avoid poulluting the
drivers dummy clock nodes are created (The autogeneration
script has been updated accordingly).

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
[paul@pwsan.com: made OMAP1 dummy_ck common and edited patch to reuse that]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Santosh Shilimkar 2010-02-22 22:09:40 -07:00 committed by Paul Walmsley
parent 5477605026
commit 7c43d54728
6 changed files with 48 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/arm/mach-omap1/clock.c
View File

@ -38,20 +38,6 @@ struct clk *api_ck_p, *ck_dpll1_p, *ck_ref_p;
* Omap1 specific clock functions
*-------------------------------------------------------------------------*/
static int clk_omap1_dummy_enable(struct clk *clk)
{
return 0;
}
static void clk_omap1_dummy_disable(struct clk *clk)
{
}
const struct clkops clkops_dummy = {
.enable = clk_omap1_dummy_enable,
.disable = clk_omap1_dummy_disable,
};
unsigned long omap1_uart_recalc(struct clk *clk)
{
unsigned int val = __raw_readl(clk->enable_reg);

6
arch/arm/mach-omap1/clock_data.c
View File

@ -27,12 +27,6 @@
* Omap1 clocks
*-------------------------------------------------------------------------*/
/* XXX is this necessary? */
static struct clk dummy_ck = {
.name = "dummy",
.ops = &clkops_dummy,
};
static struct clk ck_ref = {
.name = "ck_ref",
.ops = &clkops_null,

1
arch/arm/mach-omap2/clock.h
View File

@ -127,6 +127,7 @@ void omap2_clk_print_new_rates(const char *hfclkin_ck_name,
extern u8 cpu_mask;
extern const struct clkops clkops_omap2_dflt_wait;
extern const struct clkops clkops_dummy;
extern const struct clkops clkops_omap2_dflt;
extern struct clk_functions omap2_clk_functions;

35
arch/arm/mach-omap2/clock44xx_data.c
View File

@ -2645,6 +2645,41 @@ static struct omap_clk omap44xx_clks[] = {
CLK(NULL, "usim_fclk", &usim_fclk, CK_443X),
CLK(NULL, "utmi_p1_gfclk_ck", &utmi_p1_gfclk_ck, CK_443X),
CLK(NULL, "utmi_p2_gfclk_ck", &utmi_p2_gfclk_ck, CK_443X),
CLK(NULL, "gpio1_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpio2_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpio3_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpio4_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpio5_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpio6_dbck", &dummy_ck, CK_443X),
CLK(NULL, "gpmc_ck", &dummy_ck, CK_443X),
CLK(NULL, "gpt1_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt2_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt3_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt4_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt5_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt6_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt7_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt8_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt9_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt10_ick", &dummy_ck, CK_443X),
CLK(NULL, "gpt11_ick", &dummy_ck, CK_443X),
CLK("i2c_omap.1", "ick", &dummy_ck, CK_443X),
CLK("i2c_omap.2", "ick", &dummy_ck, CK_443X),
CLK("i2c_omap.3", "ick", &dummy_ck, CK_443X),
CLK("i2c_omap.4", "ick", &dummy_ck, CK_443X),
CLK("omap-mcbsp.1", "ick", &dummy_ck, CK_443X),
CLK("omap-mcbsp.2", "ick", &dummy_ck, CK_443X),
CLK("omap-mcbsp.3", "ick", &dummy_ck, CK_443X),
CLK("omap-mcbsp.4", "ick", &dummy_ck, CK_443X),
CLK("omap-mcspi.1", "ick", &dummy_ck, CK_443X),
CLK("omap-mcspi.2", "ick", &dummy_ck, CK_443X),
CLK("omap-mcspi.3", "ick", &dummy_ck, CK_443X),
CLK("omap-mcspi.4", "ick", &dummy_ck, CK_443X),
CLK(NULL, "uart1_ick", &dummy_ck, CK_443X),
CLK(NULL, "uart2_ick", &dummy_ck, CK_443X),
CLK(NULL, "uart3_ick", &dummy_ck, CK_443X),
CLK(NULL, "uart4_ick", &dummy_ck, CK_443X),
CLK("omap_wdt", "ick", &dummy_ck, CK_443X),
};
int __init omap4xxx_clk_init(void)

10
arch/arm/plat-omap/clock.c
View File

@ -357,6 +357,16 @@ const struct clkops clkops_null = {
.disable = clkll_disable_null,
};
/*
* Dummy clock
*
* Used for clock aliases that are needed on some OMAPs, but not others
*/
struct clk dummy_ck = {
.name = "dummy",
.ops = &clkops_null,
};
#ifdef CONFIG_CPU_FREQ
void clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
{

2
arch/arm/plat-omap/include/plat/clock.h
View File

@ -186,6 +186,8 @@ extern struct clk *omap_clk_get_by_name(const char *name);
extern const struct clkops clkops_null;
extern struct clk dummy_ck;
/* Clock flags */
#define ENABLE_REG_32BIT (1 << 0) /* Use 32-bit access */
#define CLOCK_IDLE_CONTROL (1 << 1)