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davinci: minor tnetv107x clock tree fixes

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This patch applies the following modifications to the tnetv107x clock tree:

  - reparent tnetv107x usb clocks to usbss

  - mark timer1 as always enabled

  - enable set_rate on pll divider output clocks

  - adjust tnetv107x tsc sysclk rate lower to fix invalid reset defaults

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Cyril Chemparathy 2010-10-20 17:49:57 -04:00 • committed by Kevin Hilman
parent b1d05be61f
commit ced98628bf
2 changed files with 26 additions and 12 deletions
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15
arch/arm/mach-davinci/devices-tnetv107x.c
View file

@ -344,7 +344,20 @@ static struct platform_device tsc_device = {
void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
{
int i;
int i, error;
struct clk *tsc_clk;
/*
* The reset defaults for tnetv107x tsc clock divider is set too high.
* This forces the clock down to a range that allows the ADC to
* complete sample conversion in time.
*/
tsc_clk = clk_get(NULL, "sys_tsc_clk");
if (tsc_clk) {
error = clk_set_rate(tsc_clk, 5000000);
WARN_ON(error < 0);
clk_put(tsc_clk);
}
platform_device_register(&edma_device);
platform_device_register(&tnetv107x_wdt_device);

23
arch/arm/mach-davinci/tnetv107x.c
View file

@ -131,12 +131,13 @@ define_pll_clk(tdm, 1, 0x0ff, 0x200);
define_pll_clk(eth, 2, 0x0ff, 0x400);
/* Level 2 - divided outputs from the PLLs */
#define define_pll_div_clk(pll, cname, div) \
static struct clk pll##_##cname##_clk = { \
.name = #pll "_" #cname "_clk",\
.parent = &pll_##pll##_clk, \
.flags = CLK_PLL, \
.div_reg = PLLDIV##div, \
#define define_pll_div_clk(pll, cname, div) \
static struct clk pll##_##cname##_clk = { \
.name = #pll "_" #cname "_clk", \
.parent = &pll_##pll##_clk, \
.flags = CLK_PLL, \
.div_reg = PLLDIV##div, \
.set_rate = davinci_set_sysclk_rate, \
}
define_pll_div_clk(sys, arm1176, 1);
@ -192,6 +193,7 @@ lpsc_clk_enabled(system, sys_half_clk, SYSTEM);
lpsc_clk_enabled(ddr2_vrst, sys_ddr_clk, DDR2_EMIF1_VRST);
lpsc_clk_enabled(ddr2_vctl_rst, sys_ddr_clk, DDR2_EMIF2_VCTL_RST);
lpsc_clk_enabled(wdt_arm, sys_half_clk, WDT_ARM);
lpsc_clk_enabled(timer1, sys_half_clk, TIMER1);
lpsc_clk(mbx_lite, sys_arm1176_clk, MBX_LITE);
lpsc_clk(ethss, eth_125mhz_clk, ETHSS);
@ -205,16 +207,15 @@ lpsc_clk(mdio, sys_half_clk, MDIO);
lpsc_clk(sdio0, sys_half_clk, SDIO0);
lpsc_clk(sdio1, sys_half_clk, SDIO1);
lpsc_clk(timer0, sys_half_clk, TIMER0);
lpsc_clk(timer1, sys_half_clk, TIMER1);
lpsc_clk(wdt_dsp, sys_half_clk, WDT_DSP);
lpsc_clk(ssp, sys_half_clk, SSP);
lpsc_clk(tdm0, tdm_0_clk, TDM0);
lpsc_clk(tdm1, tdm_1_clk, TDM1);
lpsc_clk(vlynq, sys_vlynq_ref_clk, VLYNQ);
lpsc_clk(mcdma, sys_half_clk, MCDMA);
lpsc_clk(usb0, sys_half_clk, USB0);
lpsc_clk(usb1, sys_half_clk, USB1);
lpsc_clk(usbss, sys_half_clk, USBSS);
lpsc_clk(usb0, clk_usbss, USB0);
lpsc_clk(usb1, clk_usbss, USB1);
lpsc_clk(ethss_rgmii, eth_250mhz_clk, ETHSS_RGMII);
lpsc_clk(imcop, sys_dsp_clk, IMCOP);
lpsc_clk(spare, sys_half_clk, SPARE);
@ -281,7 +282,9 @@ static struct clk_lookup clks[] = {
CLK(NULL, "clk_tdm0", &clk_tdm0),
CLK(NULL, "clk_vlynq", &clk_vlynq),
CLK(NULL, "clk_mcdma", &clk_mcdma),
CLK(NULL, "clk_usbss", &clk_usbss),
CLK(NULL, "clk_usb0", &clk_usb0),
CLK(NULL, "clk_usb1", &clk_usb1),
CLK(NULL, "clk_tdm1", &clk_tdm1),
CLK(NULL, "clk_debugss", &clk_debugss),
CLK(NULL, "clk_ethss_rgmii", &clk_ethss_rgmii),
@ -289,8 +292,6 @@ static struct clk_lookup clks[] = {
CLK(NULL, "clk_imcop", &clk_imcop),
CLK(NULL, "clk_spare", &clk_spare),
CLK("davinci_mmc.1", NULL, &clk_sdio1),
CLK(NULL, "clk_usb1", &clk_usb1),
CLK(NULL, "clk_usbss", &clk_usbss),
CLK(NULL, "clk_ddr2_vrst", &clk_ddr2_vrst),
CLK(NULL, "clk_ddr2_vctl_rst", &clk_ddr2_vctl_rst),
CLK(NULL, NULL, NULL),