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authorLinus Walleij <linus.walleij@linaro.org>2014-04-15 10:29:45 +0200
committerMike Turquette <mturquette@linaro.org>2014-05-21 16:16:02 -0700
commit222cb1bf180e413e1816aaf4166e4f56e72201d8 (patch)
tree40ca17242ab963a8e7ab94ea9917fa5e53e79070 /drivers/clk/versatile
parent665bb114db73a376f6ecf57e8bfa3616c40b9a1f (diff)
clk: impd1: add pclk clocks
The IM-PD1 PrimeCells all have pclk assignments though this clock cannot be controlled, and we need to provide this as a dummy clock for the PL061 GPIO driver to probe, so let's assign it to all the cells on the board. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/versatile')
-rw-r--r--drivers/clk/versatile/clk-impd1.c36
1 files changed, 29 insertions, 7 deletions
diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 264d8d59ce31..1cc1330dc570 100644
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -20,6 +20,8 @@
#define IMPD1_LOCK 0x08
struct impd1_clk {
+ char *pclkname;
+ struct clk *pclk;
char *vco1name;
struct clk *vco1clk;
char *vco2name;
@@ -31,7 +33,7 @@ struct impd1_clk {
struct clk *spiclk;
char *scname;
struct clk *scclk;
- struct clk_lookup *clks[6];
+ struct clk_lookup *clks[15];
};
/* One entry for each connected IM-PD1 LM */
@@ -86,6 +88,7 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
{
struct impd1_clk *imc;
struct clk *clk;
+ struct clk *pclk;
int i;
if (id > 3) {
@@ -94,11 +97,18 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
}
imc = &impd1_clks[id];
+ /* Register the fixed rate PCLK */
+ imc->pclkname = kasprintf(GFP_KERNEL, "lm%x-pclk", id);
+ pclk = clk_register_fixed_rate(NULL, imc->pclkname, NULL,
+ CLK_IS_ROOT, 0);
+ imc->pclk = pclk;
+
imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, NULL,
base);
imc->vco1clk = clk;
- imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
+ imc->clks[0] = clkdev_alloc(pclk, "apb_pclk", "lm%x:01000", id);
+ imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
/* VCO2 is also called "CLK2" */
imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
@@ -107,28 +117,38 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
imc->vco2clk = clk;
/* MMCI uses CLK2 right off */
- imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
+ imc->clks[2] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00700", id);
+ imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
/* UART reference clock divides CLK2 by a fixed factor 4 */
imc->uartname = kasprintf(GFP_KERNEL, "lm%x-uartclk", id);
clk = clk_register_fixed_factor(NULL, imc->uartname, imc->vco2name,
CLK_IGNORE_UNUSED, 1, 4);
imc->uartclk = clk;
- imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
- imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+ imc->clks[4] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00100", id);
+ imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
+ imc->clks[6] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00200", id);
+ imc->clks[7] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
/* SPI PL022 clock divides CLK2 by a fixed factor 64 */
imc->spiname = kasprintf(GFP_KERNEL, "lm%x-spiclk", id);
clk = clk_register_fixed_factor(NULL, imc->spiname, imc->vco2name,
CLK_IGNORE_UNUSED, 1, 64);
- imc->clks[4] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+ imc->clks[8] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00300", id);
+ imc->clks[9] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+
+ /* The GPIO blocks and AACI have only PCLK */
+ imc->clks[10] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00400", id);
+ imc->clks[11] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00500", id);
+ imc->clks[12] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00800", id);
/* Smart Card clock divides CLK2 by a fixed factor 4 */
imc->scname = kasprintf(GFP_KERNEL, "lm%x-scclk", id);
clk = clk_register_fixed_factor(NULL, imc->scname, imc->vco2name,
CLK_IGNORE_UNUSED, 1, 4);
imc->scclk = clk;
- imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
+ imc->clks[13] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00600", id);
+ imc->clks[14] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
clkdev_add(imc->clks[i]);
@@ -150,10 +170,12 @@ void integrator_impd1_clk_exit(unsigned int id)
clk_unregister(imc->uartclk);
clk_unregister(imc->vco2clk);
clk_unregister(imc->vco1clk);
+ clk_unregister(imc->pclk);
kfree(imc->scname);
kfree(imc->spiname);
kfree(imc->uartname);
kfree(imc->vco2name);
kfree(imc->vco1name);
+ kfree(imc->pclkname);
}
EXPORT_SYMBOL_GPL(integrator_impd1_clk_exit);