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rockchip: rk3288: clock: Fix various minor errors 

Fix a number of small errors which were found in reviewing the clock code.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2016-01-21 19:45:15 -07:00
parent 4f14d135f9
commit c87c129f7f
1 changed files with 13 additions and 8 deletions
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21
drivers/clk/clk_rk3288.c
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@ -83,8 +83,13 @@ enum {
* peripheral bus pclk div:
* aclk_bus: pclk_bus = 1:1 or 2:1 or 4:1 or 8:1
*/
PERI_SEL_PLL_MASK = 1,
PERI_SEL_PLL_SHIFT = 15,
PERI_SEL_CPLL = 0,
PERI_SEL_GPLL,
PERI_PCLK_DIV_SHIFT = 12,
PERI_PCLK_DIV_MASK = 7,
PERI_PCLK_DIV_MASK = 3,
/* peripheral bus hclk div: aclk_bus: hclk_bus = 1:1 or 2:1 or 4:1 */
PERI_HCLK_DIV_SHIFT = 8,
@ -160,13 +165,13 @@ static int rkclk_set_pll(struct rk3288_cru *cru, enum rk_clk_id clk_id,
uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000;
uint output_hz = vco_hz / div->no;
debug("PLL at %p: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n",
pll, div->nf, div->nr, div->no, vco_hz, output_hz);
debug("PLL at %x: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n",
(uint)pll, div->nf, div->nr, div->no, vco_hz, output_hz);
assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ &&
(div->no == 1 || !(div->no % 2)));
/* enter rest */
/* enter reset */
rk_setreg(&pll->con3, 1 << PLL_RESET_SHIFT);
rk_clrsetreg(&pll->con0,
@ -177,7 +182,7 @@ static int rkclk_set_pll(struct rk3288_cru *cru, enum rk_clk_id clk_id,
udelay(10);
/* return form rest */
/* return from reset */
rk_clrreg(&pll->con3, 1 << PLL_RESET_SHIFT);
return 0;
@ -199,7 +204,6 @@ static int rkclk_configure_ddr(struct rk3288_cru *cru, struct rk3288_grf *grf,
};
int cfg;
debug("%s: cru=%p, grf=%p, hz=%u\n", __func__, cru, grf, hz);
switch (hz) {
case 300000000:
cfg = 0;
@ -214,7 +218,7 @@ static int rkclk_configure_ddr(struct rk3288_cru *cru, struct rk3288_grf *grf,
cfg = 3;
break;
default:
debug("Unsupported SDRAM frequency, add to clock.c!");
debug("Unsupported SDRAM frequency");
return -EINVAL;
}
@ -420,6 +424,7 @@ static void rkclk_init(struct rk3288_cru *cru, struct rk3288_grf *grf)
PERI_PCLK_DIV_MASK << PERI_PCLK_DIV_SHIFT |
PERI_HCLK_DIV_MASK << PERI_HCLK_DIV_SHIFT |
PERI_ACLK_DIV_MASK << PERI_ACLK_DIV_SHIFT,
PERI_SEL_GPLL << PERI_SEL_PLL_SHIFT |
pclk_div << PERI_PCLK_DIV_SHIFT |
hclk_div << PERI_HCLK_DIV_SHIFT |
aclk_div << PERI_ACLK_DIV_SHIFT);
@ -787,7 +792,7 @@ static const char *const clk_name[CLK_COUNT] = {
"dpll",
"cpll",
"gpll",
"mpll",
"npll",
};
static int rk3288_clk_bind(struct udevice *dev)