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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 15:38:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 15:38:49 -0800
commita8f3740feb12928be1aad19659bf3527ea8d6d96 (patch)
treef455479d5b9edd38ed2ca2ab878d2217025960db /drivers/clk
parent6c5096e5538b455bc3bea2b02588c380f070d8c6 (diff)
parent89dfe564b5926297ee29b973fe75e25c83c5e615 (diff)
downloadvexpress-lsk-a8f3740feb12928be1aad19659bf3527ea8d6d96.tar.gz
Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree conversions from Arnd Bergmann: "These are device tree conversions for a number of platforms, with the intention of turning code from board files into device tree descriptions. Notable changes are: - davinci bindings for pinctrl, MTD, RTC, watchdog and i2c - nomadik bindings for all devices, removing the board files - bcm2835 bindings for mmc and i2c - tegra bindings for hdmi, keyboard, audio, as well as some updates - at91 bindings for hardware ecc and for devices on RM9200 - mxs bindings for cfa100xx - sunxi support for Miniand Hackberry board" * tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (72 commits) Revert "sunxi: a10-cubieboard: Add user LEDs to the device tree" Revert "sunxi: a13-olinuxino: Add user LED to the device tree" clk: tegra: initialise parent of uart clocks ARM: tegra: remove clock-frequency properties from serial nodes clk: tegra: fix driver to match DT binding clk: tegra: local arrays should be static clk: tegra: Add missing spinlock for hclk and pclk clk: tegra: Implement locking for super clock clk: tegra: fix wrong clock index between se to sata_cold sunxi: a13-olinuxino: Add user LED to the device tree ARM: davinci: da850 DT: add support for machine reboot ARM: davinci: da850: add wdt DT node ARM: davinci: da850: add DT node for I2C0 ARM: at91: at91sam9n12: add DT parameters to enable PMECC ARM: at91: at91sam9x5: add DT parameters to enable PMECC ARM: at91: add EMAC bindings to RM9200 DT ARM: at91: add SSC bindings to RM9200 DT ARM: at91: add MMC bindings to RM9200 DT ARM: at91: Animeo IP: enable watchdog support ARM: nomadik: fix OF compilation regression ...
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/tegra/clk-super.c18
-rw-r--r--drivers/clk/tegra/clk-tegra20.c22
-rw-r--r--drivers/clk/tegra/clk-tegra30.c47
3 files changed, 56 insertions, 31 deletions
diff --git a/drivers/clk/tegra/clk-super.c b/drivers/clk/tegra/clk-super.c
index 7ad48a83233..2fd924d3860 100644
--- a/drivers/clk/tegra/clk-super.c
+++ b/drivers/clk/tegra/clk-super.c
@@ -73,7 +73,12 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
{
struct tegra_clk_super_mux *mux = to_clk_super_mux(hw);
u32 val, state;
+ int err = 0;
u8 parent_index, shift;
+ unsigned long flags = 0;
+
+ if (mux->lock)
+ spin_lock_irqsave(mux->lock, flags);
val = readl_relaxed(mux->reg);
state = val & SUPER_STATE_MASK;
@@ -92,8 +97,10 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
(index == mux->pllx_index))) {
parent_index = clk_super_get_parent(hw);
if ((parent_index == mux->div2_index) ||
- (parent_index == mux->pllx_index))
- return -EINVAL;
+ (parent_index == mux->pllx_index)) {
+ err = -EINVAL;
+ goto out;
+ }
val ^= SUPER_LP_DIV2_BYPASS;
writel_relaxed(val, mux->reg);
@@ -107,7 +114,12 @@ static int clk_super_set_parent(struct clk_hw *hw, u8 index)
writel_relaxed(val, mux->reg);
udelay(2);
- return 0;
+
+out:
+ if (mux->lock)
+ spin_unlock_irqrestore(mux->lock, flags);
+
+ return err;
}
const struct clk_ops tegra_clk_super_ops = {
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index 5d41569883a..143ce1f899a 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -194,6 +194,7 @@ static void __iomem *clk_base;
static void __iomem *pmc_base;
static DEFINE_SPINLOCK(pll_div_lock);
+static DEFINE_SPINLOCK(sysrate_lock);
#define TEGRA_INIT_DATA_MUX(_name, _con_id, _dev_id, _parents, _offset, \
_clk_num, _regs, _gate_flags, _clk_id) \
@@ -239,8 +240,8 @@ enum tegra20_clk {
uartb = 96, vfir, spdif_in, spdif_out, vi, vi_sensor, tvo, cve,
osc, clk_32k, clk_m, sclk, cclk, hclk, pclk, blink, pll_a, pll_a_out0,
pll_c, pll_c_out1, pll_d, pll_d_out0, pll_e, pll_m, pll_m_out1,
- pll_p, pll_p_out1, pll_p_out2, pll_p_out3, pll_p_out4, pll_u,
- pll_x, audio, pll_ref, twd, clk_max,
+ pll_p, pll_p_out1, pll_p_out2, pll_p_out3, pll_p_out4, pll_s, pll_u,
+ pll_x, cop, audio, pll_ref, twd, clk_max,
};
static struct clk *clks[clk_max];
@@ -768,19 +769,21 @@ static void tegra20_super_clk_init(void)
/* HCLK */
clk = clk_register_divider(NULL, "hclk_div", "sclk", 0,
- clk_base + CLK_SYSTEM_RATE, 4, 2, 0, NULL);
+ clk_base + CLK_SYSTEM_RATE, 4, 2, 0,
+ &sysrate_lock);
clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT,
clk_base + CLK_SYSTEM_RATE, 7,
- CLK_GATE_SET_TO_DISABLE, NULL);
+ CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "hclk", NULL);
clks[hclk] = clk;
/* PCLK */
clk = clk_register_divider(NULL, "pclk_div", "hclk", 0,
- clk_base + CLK_SYSTEM_RATE, 0, 2, 0, NULL);
+ clk_base + CLK_SYSTEM_RATE, 0, 2, 0,
+ &sysrate_lock);
clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT,
clk_base + CLK_SYSTEM_RATE, 3,
- CLK_GATE_SET_TO_DISABLE, NULL);
+ CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "pclk", NULL);
clks[pclk] = clk;
@@ -1251,8 +1254,11 @@ static __initdata struct tegra_clk_init_table init_table[] = {
{csite, clk_max, 0, 1},
{emc, clk_max, 0, 1},
{cclk, clk_max, 0, 1},
- {uarta, pll_p, 0, 1},
- {uartd, pll_p, 0, 1},
+ {uarta, pll_p, 0, 0},
+ {uartb, pll_p, 0, 0},
+ {uartc, pll_p, 0, 0},
+ {uartd, pll_p, 0, 0},
+ {uarte, pll_p, 0, 0},
{usbd, clk_max, 12000000, 0},
{usb2, clk_max, 12000000, 0},
{usb3, clk_max, 12000000, 0},
diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c
index a1638129eba..32c61cb6d0b 100644
--- a/drivers/clk/tegra/clk-tegra30.c
+++ b/drivers/clk/tegra/clk-tegra30.c
@@ -275,6 +275,7 @@ static DEFINE_SPINLOCK(clk_out_lock);
static DEFINE_SPINLOCK(pll_div_lock);
static DEFINE_SPINLOCK(cml_lock);
static DEFINE_SPINLOCK(pll_d_lock);
+static DEFINE_SPINLOCK(sysrate_lock);
#define TEGRA_INIT_DATA_MUX(_name, _con_id, _dev_id, _parents, _offset, \
_clk_num, _regs, _gate_flags, _clk_id) \
@@ -327,21 +328,21 @@ enum tegra30_clk {
kbc = 36, statmon, pmc, kfuse = 40, sbc1, nor, sbc2 = 44, sbc3 = 46,
i2c5, dsia, mipi = 50, hdmi, csi, tvdac, i2c2, uartc, emc = 57, usb2,
usb3, mpe, vde, bsea, bsev, speedo, uartd, uarte, i2c3, sbc4, sdmmc3,
- pcie, owr, afi, csite, pciex, avpucq, la, dtv = 79, ndspeed, i2c_slow,
+ pcie, owr, afi, csite, pciex, avpucq, la, dtv = 79, ndspeed, i2cslow,
dsib, irama = 84, iramb, iramc, iramd, cram2, audio_2x = 90, csus = 92,
cdev1, cdev2, cpu_g = 96, cpu_lp, gr3d2, mselect, tsensor, i2s3, i2s4,
i2c4, sbc5, sbc6, d_audio, apbif, dam0, dam1, dam2, hda2codec_2x,
atomics, audio0_2x, audio1_2x, audio2_2x, audio3_2x, audio4_2x,
- spdif_2x, actmon, extern1, extern2, extern3, sata_oob, sata, hda, se,
- hda2hdmi, sata_cold, uartb = 160, vfir, spdif_out, spdif_in, vi,
- vi_sensor, fuse, fuse_burn, cve, tvo, clk_32k, clk_m, clk_m_div2,
+ spdif_2x, actmon, extern1, extern2, extern3, sata_oob, sata, hda,
+ se = 127, hda2hdmi, sata_cold, uartb = 160, vfir, spdif_in, spdif_out,
+ vi, vi_sensor, fuse, fuse_burn, cve, tvo, clk_32k, clk_m, clk_m_div2,
clk_m_div4, pll_ref, pll_c, pll_c_out1, pll_m, pll_m_out1, pll_p,
pll_p_out1, pll_p_out2, pll_p_out3, pll_p_out4, pll_a, pll_a_out0,
pll_d, pll_d_out0, pll_d2, pll_d2_out0, pll_u, pll_x, pll_x_out0, pll_e,
spdif_in_sync, i2s0_sync, i2s1_sync, i2s2_sync, i2s3_sync, i2s4_sync,
vimclk_sync, audio0, audio1, audio2, audio3, audio4, spdif, clk_out_1,
clk_out_2, clk_out_3, sclk, blink, cclk_g, cclk_lp, twd, cml0, cml1,
- i2cslow, hclk, pclk, clk_out_1_mux = 300, clk_max
+ hclk, pclk, clk_out_1_mux = 300, clk_max
};
static struct clk *clks[clk_max];
@@ -1249,16 +1250,16 @@ static void __init tegra30_pmc_clk_init(void)
}
-const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
- "pll_p_cclkg", "pll_p_out4_cclkg",
- "pll_p_out3_cclkg", "unused", "pll_x" };
-const char *cclk_lp_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
- "pll_p_cclklp", "pll_p_out4_cclklp",
- "pll_p_out3_cclklp", "unused", "pll_x",
- "pll_x_out0" };
-const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
- "pll_p_out3", "pll_p_out2", "unused",
- "clk_32k", "pll_m_out1" };
+static const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
+ "pll_p_cclkg", "pll_p_out4_cclkg",
+ "pll_p_out3_cclkg", "unused", "pll_x" };
+static const char *cclk_lp_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
+ "pll_p_cclklp", "pll_p_out4_cclklp",
+ "pll_p_out3_cclklp", "unused", "pll_x",
+ "pll_x_out0" };
+static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
+ "pll_p_out3", "pll_p_out2", "unused",
+ "clk_32k", "pll_m_out1" };
static void __init tegra30_super_clk_init(void)
{
@@ -1348,19 +1349,21 @@ static void __init tegra30_super_clk_init(void)
/* HCLK */
clk = clk_register_divider(NULL, "hclk_div", "sclk", 0,
- clk_base + SYSTEM_CLK_RATE, 4, 2, 0, NULL);
+ clk_base + SYSTEM_CLK_RATE, 4, 2, 0,
+ &sysrate_lock);
clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT,
clk_base + SYSTEM_CLK_RATE, 7,
- CLK_GATE_SET_TO_DISABLE, NULL);
+ CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "hclk", NULL);
clks[hclk] = clk;
/* PCLK */
clk = clk_register_divider(NULL, "pclk_div", "hclk", 0,
- clk_base + SYSTEM_CLK_RATE, 0, 2, 0, NULL);
+ clk_base + SYSTEM_CLK_RATE, 0, 2, 0,
+ &sysrate_lock);
clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT,
clk_base + SYSTEM_CLK_RATE, 3,
- CLK_GATE_SET_TO_DISABLE, NULL);
+ CLK_GATE_SET_TO_DISABLE, &sysrate_lock);
clk_register_clkdev(clk, "pclk", NULL);
clks[pclk] = clk;
@@ -1874,7 +1877,11 @@ static struct tegra_cpu_car_ops tegra30_cpu_car_ops = {
};
static __initdata struct tegra_clk_init_table init_table[] = {
- {uarta, pll_p, 408000000, 1},
+ {uarta, pll_p, 408000000, 0},
+ {uartb, pll_p, 408000000, 0},
+ {uartc, pll_p, 408000000, 0},
+ {uartd, pll_p, 408000000, 0},
+ {uarte, pll_p, 408000000, 0},
{pll_a, clk_max, 564480000, 1},
{pll_a_out0, clk_max, 11289600, 1},
{extern1, pll_a_out0, 0, 1},