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ARM: mx5/clock-mx51: add spi clocks

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Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jason Wang 2010-09-02 15:52:00 +08:00 committed by Sascha Hauer
parent 74d99f3959
commit 8d83db81af
1 changed files with 57 additions and 0 deletions
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57
arch/arm/mach-mx5/clock-mx51.c
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@ -764,6 +764,42 @@ static struct clk kpp_clk = {
.id = 0, .id = 0,
}; };
/* eCSPI */
static unsigned long clk_ecspi_get_rate(struct clk *clk)
{
u32 reg, pred, podf;
reg = __raw_readl(MXC_CCM_CSCDR2);
pred = (reg & MXC_CCM_CSCDR2_CSPI_CLK_PRED_MASK) >>
MXC_CCM_CSCDR2_CSPI_CLK_PRED_OFFSET;
podf = (reg & MXC_CCM_CSCDR2_CSPI_CLK_PODF_MASK) >>
MXC_CCM_CSCDR2_CSPI_CLK_PODF_OFFSET;
return DIV_ROUND_CLOSEST(clk_get_rate(clk->parent),
(pred + 1) * (podf + 1));
}
static int clk_ecspi_set_parent(struct clk *clk, struct clk *parent)
{
u32 reg, mux;
mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk,
&lp_apm_clk);
reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_CSPI_CLK_SEL_MASK;
reg |= mux << MXC_CCM_CSCMR1_CSPI_CLK_SEL_OFFSET;
__raw_writel(reg, MXC_CCM_CSCMR1);
return 0;
}
static struct clk ecspi_main_clk = {
.parent = &pll3_sw_clk,
.get_rate = clk_ecspi_get_rate,
.set_parent = clk_ecspi_set_parent,
};
#define DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, e, d, p, s) \ #define DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, e, d, p, s) \
static struct clk name = { \ static struct clk name = { \
.id = i, \ .id = i, \
@ -816,6 +852,24 @@ DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET,
DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET, DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET,
NULL, NULL, &ipg_clk, NULL); NULL, NULL, &ipg_clk, NULL);
/* eCSPI */
DEFINE_CLOCK_FULL(ecspi1_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET,
NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable,
&ipg_clk, &spba_clk);
DEFINE_CLOCK(ecspi1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG10_OFFSET,
NULL, NULL, &ecspi_main_clk, &ecspi1_ipg_clk);
DEFINE_CLOCK_FULL(ecspi2_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG11_OFFSET,
NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable,
&ipg_clk, &aips_tz2_clk);
DEFINE_CLOCK(ecspi2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG12_OFFSET,
NULL, NULL, &ecspi_main_clk, &ecspi2_ipg_clk);
/* CSPI */
DEFINE_CLOCK(cspi_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET,
NULL, NULL, &ipg_clk, &aips_tz2_clk);
DEFINE_CLOCK(cspi_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG13_OFFSET,
NULL, NULL, &ipg_clk, &cspi_ipg_clk);
#define _REGISTER_CLOCK(d, n, c) \ #define _REGISTER_CLOCK(d, n, c) \
{ \ { \
.dev_id = d, \ .dev_id = d, \
@ -839,6 +893,9 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk) _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk)
_REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk) _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk)
_REGISTER_CLOCK("imx-keypad.0", NULL, kpp_clk) _REGISTER_CLOCK("imx-keypad.0", NULL, kpp_clk)
_REGISTER_CLOCK("imx51-ecspi.0", NULL, ecspi1_clk)
_REGISTER_CLOCK("imx51-ecspi.1", NULL, ecspi2_clk)
_REGISTER_CLOCK("imx51-cspi.0", NULL, cspi_clk)
}; };
static void clk_tree_init(void) static void clk_tree_init(void)