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-rw-r--r--arch/arm/mach-omap2/board-rx51-peripherals.c1
-rw-r--r--arch/arm/mach-omap2/clock.c2
-rw-r--r--arch/arm/mach-omap2/clock34xx.c42
-rw-r--r--arch/arm/mach-omap2/gpmc-onenand.c21
-rw-r--r--arch/arm/mach-omap2/id.c22
-rw-r--r--arch/arm/mach-omap2/io.c36
-rw-r--r--arch/arm/mach-omap2/mailbox.c6
-rw-r--r--arch/arm/mach-omap2/mmc-twl4030.c13
-rw-r--r--arch/arm/mach-omap2/powerdomain.c2
-rw-r--r--arch/arm/mach-omap2/sram34xx.S129
10 files changed, 211 insertions, 63 deletions
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index da93b86234e..9a0bf6744a0 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -362,6 +362,7 @@ static struct omap_onenand_platform_data board_onenand_data = {
.gpio_irq = 65,
.parts = onenand_partitions,
.nr_parts = ARRAY_SIZE(onenand_partitions),
+ .flags = ONENAND_SYNC_READWRITE,
};
static void __init board_onenand_init(void)
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index ba528f85749..b0665f161c0 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -302,7 +302,7 @@ int omap2_wait_clock_ready(void __iomem *reg, u32 mask, const char *name)
udelay(1);
}
- if (i < MAX_CLOCK_ENABLE_WAIT)
+ if (i <= MAX_CLOCK_ENABLE_WAIT)
pr_debug("Clock %s stable after %d loops\n", name, i);
else
printk(KERN_ERR "Clock %s didn't enable in %d tries\n",
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 9e43fe5209d..045da923e75 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -286,6 +286,20 @@ static struct omap_clk omap34xx_clks[] = {
#define MIN_SDRC_DLL_LOCK_FREQ 83000000
+#define CYCLES_PER_MHZ 1000000
+
+/* Scale factor for fixed-point arith in omap3_core_dpll_m2_set_rate() */
+#define SDRC_MPURATE_SCALE 8
+
+/* 2^SDRC_MPURATE_BASE_SHIFT: MPU MHz that SDRC_MPURATE_LOOPS is defined for */
+#define SDRC_MPURATE_BASE_SHIFT 9
+
+/*
+ * SDRC_MPURATE_LOOPS: Number of MPU loops to execute at
+ * 2^MPURATE_BASE_SHIFT MHz for SDRC to stabilize
+ */
+#define SDRC_MPURATE_LOOPS 96
+
/**
* omap3_dpll_recalc - recalculate DPLL rate
* @clk: DPLL struct clk
@@ -709,7 +723,8 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
{
u32 new_div = 0;
u32 unlock_dll = 0;
- unsigned long validrate, sdrcrate;
+ u32 c;
+ unsigned long validrate, sdrcrate, mpurate;
struct omap_sdrc_params *sp;
if (!clk || !rate)
@@ -718,18 +733,15 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
if (clk != &dpll3_m2_ck)
return -EINVAL;
- if (rate == clk->rate)
- return 0;
-
validrate = omap2_clksel_round_rate_div(clk, rate, &new_div);
if (validrate != rate)
return -EINVAL;
sdrcrate = sdrc_ick.rate;
if (rate > clk->rate)
- sdrcrate <<= ((rate / clk->rate) - 1);
+ sdrcrate <<= ((rate / clk->rate) >> 1);
else
- sdrcrate >>= ((clk->rate / rate) - 1);
+ sdrcrate >>= ((clk->rate / rate) >> 1);
sp = omap2_sdrc_get_params(sdrcrate);
if (!sp)
@@ -740,17 +752,25 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
unlock_dll = 1;
}
+ /*
+ * XXX This only needs to be done when the CPU frequency changes
+ */
+ mpurate = arm_fck.rate / CYCLES_PER_MHZ;
+ c = (mpurate << SDRC_MPURATE_SCALE) >> SDRC_MPURATE_BASE_SHIFT;
+ c += 1; /* for safety */
+ c *= SDRC_MPURATE_LOOPS;
+ c >>= SDRC_MPURATE_SCALE;
+ if (c == 0)
+ c = 1;
+
pr_debug("clock: changing CORE DPLL rate from %lu to %lu\n", clk->rate,
validrate);
pr_debug("clock: SDRC timing params used: %08x %08x %08x\n",
sp->rfr_ctrl, sp->actim_ctrla, sp->actim_ctrlb);
- /* REVISIT: SRAM code doesn't support other M2 divisors yet */
- WARN_ON(new_div != 1 && new_div != 2);
-
- /* REVISIT: Add SDRC_MR changing to this code also */
omap3_configure_core_dpll(sp->rfr_ctrl, sp->actim_ctrla,
- sp->actim_ctrlb, new_div, unlock_dll);
+ sp->actim_ctrlb, new_div, unlock_dll, c,
+ sp->mr, rate > clk->rate);
return 0;
}
diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
index 2fd22f9c5f0..54fec53a48e 100644
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -31,6 +31,8 @@ static struct platform_device gpmc_onenand_device = {
static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
{
struct gpmc_timings t;
+ u32 reg;
+ int err;
const int t_cer = 15;
const int t_avdp = 12;
@@ -43,6 +45,11 @@ static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
const int t_wpl = 40;
const int t_wph = 30;
+ /* Ensure sync read and sync write are disabled */
+ reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
+ reg &= ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE;
+ writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
+
memset(&t, 0, sizeof(t));
t.sync_clk = 0;
t.cs_on = 0;
@@ -74,7 +81,16 @@ static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
GPMC_CONFIG1_DEVICESIZE_16 |
GPMC_CONFIG1_MUXADDDATA);
- return gpmc_cs_set_timings(cs, &t);
+ err = gpmc_cs_set_timings(cs, &t);
+ if (err)
+ return err;
+
+ /* Ensure sync read and sync write are disabled */
+ reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
+ reg &= ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE;
+ writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
+
+ return 0;
}
static void set_onenand_cfg(void __iomem *onenand_base, int latency,
@@ -124,7 +140,8 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
} else if (cfg->flags & ONENAND_SYNC_READWRITE) {
sync_read = 1;
sync_write = 1;
- }
+ } else
+ return omap2_onenand_set_async_mode(cs, onenand_base);
if (!freq) {
/* Very first call freq is not known */
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 458990e20c6..a98201cc265 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -48,6 +48,28 @@ int omap_chip_is(struct omap_chip_id oci)
}
EXPORT_SYMBOL(omap_chip_is);
+int omap_type(void)
+{
+ u32 val = 0;
+
+ if (cpu_is_omap24xx())
+ val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
+ else if (cpu_is_omap34xx())
+ val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
+ else {
+ pr_err("Cannot detect omap type!\n");
+ goto out;
+ }
+
+ val &= OMAP2_DEVICETYPE_MASK;
+ val >>= 8;
+
+out:
+ return val;
+}
+EXPORT_SYMBOL(omap_type);
+
+
/*----------------------------------------------------------------------------*/
#define OMAP_TAP_IDCODE 0x0204
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 32afd944821..3a86b0f6603 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/clk.h>
#include <asm/tlb.h>
@@ -241,6 +242,40 @@ void __init omap2_map_common_io(void)
omapfb_reserve_sdram();
}
+/*
+ * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
+ *
+ * Sets the CORE DPLL3 M2 divider to the same value that it's at
+ * currently. This has the effect of setting the SDRC SDRAM AC timing
+ * registers to the values currently defined by the kernel. Currently
+ * only defined for OMAP3; will return 0 if called on OMAP2. Returns
+ * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
+ * or passes along the return value of clk_set_rate().
+ */
+static int __init _omap2_init_reprogram_sdrc(void)
+{
+ struct clk *dpll3_m2_ck;
+ int v = -EINVAL;
+ long rate;
+
+ if (!cpu_is_omap34xx())
+ return 0;
+
+ dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
+ if (!dpll3_m2_ck)
+ return -EINVAL;
+
+ rate = clk_get_rate(dpll3_m2_ck);
+ pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
+ v = clk_set_rate(dpll3_m2_ck, rate);
+ if (v)
+ pr_err("dpll3_m2_clk rate change failed: %d\n", v);
+
+ clk_put(dpll3_m2_ck);
+
+ return v;
+}
+
void __init omap2_init_common_hw(struct omap_sdrc_params *sp)
{
omap2_mux_init();
@@ -249,6 +284,7 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sp)
clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
omap2_clk_init();
omap2_sdrc_init(sp);
+ _omap2_init_reprogram_sdrc();
#endif
gpmc_init();
}
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index fd5b8a5925c..6f71f3730c9 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -282,12 +282,12 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev)
return -ENOMEM;
/* DSP or IVA2 IRQ */
- mbox_dsp_info.irq = platform_get_irq(pdev, 0);
- if (mbox_dsp_info.irq < 0) {
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
dev_err(&pdev->dev, "invalid irq resource\n");
- ret = -ENODEV;
goto err_dsp;
}
+ mbox_dsp_info.irq = ret;
ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info);
if (ret)
diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 9756a878fd9..1541fd4c8d0 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -263,8 +263,19 @@ static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
static int twl_mmc23_set_power(struct device *dev, int slot, int power_on, int vdd)
{
int ret = 0;
- struct twl_mmc_controller *c = &hsmmc[1];
+ struct twl_mmc_controller *c = NULL;
struct omap_mmc_platform_data *mmc = dev->platform_data;
+ int i;
+
+ for (i = 1; i < ARRAY_SIZE(hsmmc); i++) {
+ if (mmc == hsmmc[i].mmc) {
+ c = &hsmmc[i];
+ break;
+ }
+ }
+
+ if (c == NULL)
+ return -ENODEV;
/* If we don't see a Vcc regulator, assume it's a fixed
* voltage always-on regulator.
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 73e2971b175..983f1cb676b 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -1099,7 +1099,7 @@ int pwrdm_wait_transition(struct powerdomain *pwrdm)
(c++ < PWRDM_TRANSITION_BAILOUT))
udelay(1);
- if (c >= PWRDM_TRANSITION_BAILOUT) {
+ if (c > PWRDM_TRANSITION_BAILOUT) {
printk(KERN_ERR "powerdomain: waited too long for "
"powerdomain %s to complete transition\n", pwrdm->name);
return -EAGAIN;
diff --git a/arch/arm/mach-omap2/sram34xx.S b/arch/arm/mach-omap2/sram34xx.S
index c080c82521e..f41f8d96ddb 100644
--- a/arch/arm/mach-omap2/sram34xx.S
+++ b/arch/arm/mach-omap2/sram34xx.S
@@ -3,13 +3,12 @@
*
* Omap3 specific functions that need to be run in internal SRAM
*
- * (C) Copyright 2007
- * Texas Instruments Inc.
- * Rajendra Nayak <rnayak@ti.com>
+ * Copyright (C) 2004, 2007, 2008 Texas Instruments, Inc.
+ * Copyright (C) 2008 Nokia Corporation
*
- * (C) Copyright 2004
- * Texas Instruments, <www.ti.com>
+ * Rajendra Nayak <rnayak@ti.com>
* Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -37,61 +36,112 @@
.text
+/* r4 parameters */
+#define SDRC_NO_UNLOCK_DLL 0x0
+#define SDRC_UNLOCK_DLL 0x1
+
+/* SDRC_DLLA_CTRL bit settings */
+#define FIXEDDELAY_SHIFT 24
+#define FIXEDDELAY_MASK (0xff << FIXEDDELAY_SHIFT)
+#define DLLIDLE_MASK 0x4
+
+/*
+ * SDRC_DLLA_CTRL default values: TI hardware team indicates that
+ * FIXEDDELAY should be initialized to 0xf. This apparently was
+ * empirically determined during process testing, so no derivation
+ * was provided.
+ */
+#define FIXEDDELAY_DEFAULT (0x0f << FIXEDDELAY_SHIFT)
+
+/* SDRC_DLLA_STATUS bit settings */
+#define LOCKSTATUS_MASK 0x4
+
+/* SDRC_POWER bit settings */
+#define SRFRONIDLEREQ_MASK 0x40
+#define PWDENA_MASK 0x4
+
+/* CM_IDLEST1_CORE bit settings */
+#define ST_SDRC_MASK 0x2
+
+/* CM_ICLKEN1_CORE bit settings */
+#define EN_SDRC_MASK 0x2
+
+/* CM_CLKSEL1_PLL bit settings */
+#define CORE_DPLL_CLKOUT_DIV_SHIFT 0x1b
+
/*
- * Change frequency of core dpll
- * r0 = sdrc_rfr_ctrl r1 = sdrc_actim_ctrla r2 = sdrc_actim_ctrlb r3 = M2
- * r4 = Unlock SDRC DLL? (1 = yes, 0 = no) -- only unlock DLL for
+ * omap3_sram_configure_core_dpll - change DPLL3 M2 divider
+ * r0 = new SDRC_RFR_CTRL register contents
+ * r1 = new SDRC_ACTIM_CTRLA register contents
+ * r2 = new SDRC_ACTIM_CTRLB register contents
+ * r3 = new M2 divider setting (only 1 and 2 supported right now)
+ * r4 = unlock SDRC DLL? (1 = yes, 0 = no). Only unlock DLL for
* SDRC rates < 83MHz
+ * r5 = number of MPU cycles to wait for SDRC to stabilize after
+ * reprogramming the SDRC when switching to a slower MPU speed
+ * r6 = new SDRC_MR_0 register value
+ * r7 = increasing SDRC rate? (1 = yes, 0 = no)
+ *
*/
ENTRY(omap3_sram_configure_core_dpll)
stmfd sp!, {r1-r12, lr} @ store regs to stack
ldr r4, [sp, #52] @ pull extra args off the stack
+ ldr r5, [sp, #56] @ load extra args from the stack
+ ldr r6, [sp, #60] @ load extra args from the stack
+ ldr r7, [sp, #64] @ load extra args from the stack
dsb @ flush buffered writes to interconnect
- cmp r3, #0x2
- blne configure_sdrc
- cmp r4, #0x1
+ cmp r7, #1 @ if increasing SDRC clk rate,
+ bleq configure_sdrc @ program the SDRC regs early (for RFR)
+ cmp r4, #SDRC_UNLOCK_DLL @ set the intended DLL state
bleq unlock_dll
blne lock_dll
- bl sdram_in_selfrefresh @ put the SDRAM in self refresh
- bl configure_core_dpll
- bl enable_sdrc
- cmp r4, #0x1
+ bl sdram_in_selfrefresh @ put SDRAM in self refresh, idle SDRC
+ bl configure_core_dpll @ change the DPLL3 M2 divider
+ bl enable_sdrc @ take SDRC out of idle
+ cmp r4, #SDRC_UNLOCK_DLL @ wait for DLL status to change
bleq wait_dll_unlock
blne wait_dll_lock
- cmp r3, #0x1
- blne configure_sdrc
+ cmp r7, #1 @ if increasing SDRC clk rate,
+ beq return_to_sdram @ return to SDRAM code, otherwise,
+ bl configure_sdrc @ reprogram SDRC regs now
+ mov r12, r5
+ bl wait_clk_stable @ wait for SDRC to stabilize
+return_to_sdram:
isb @ prevent speculative exec past here
mov r0, #0 @ return value
ldmfd sp!, {r1-r12, pc} @ restore regs and return
unlock_dll:
ldr r11, omap3_sdrc_dlla_ctrl
ldr r12, [r11]
- orr r12, r12, #0x4
+ and r12, r12, #FIXEDDELAY_MASK
+ orr r12, r12, #FIXEDDELAY_DEFAULT
+ orr r12, r12, #DLLIDLE_MASK
str r12, [r11] @ (no OCP barrier needed)
bx lr
lock_dll:
ldr r11, omap3_sdrc_dlla_ctrl
ldr r12, [r11]
- bic r12, r12, #0x4
+ bic r12, r12, #DLLIDLE_MASK
str r12, [r11] @ (no OCP barrier needed)
bx lr
sdram_in_selfrefresh:
ldr r11, omap3_sdrc_power @ read the SDRC_POWER register
ldr r12, [r11] @ read the contents of SDRC_POWER
mov r9, r12 @ keep a copy of SDRC_POWER bits
- orr r12, r12, #0x40 @ enable self refresh on idle req
- bic r12, r12, #0x4 @ clear PWDENA
+ orr r12, r12, #SRFRONIDLEREQ_MASK @ enable self refresh on idle
+ bic r12, r12, #PWDENA_MASK @ clear PWDENA
str r12, [r11] @ write back to SDRC_POWER register
ldr r12, [r11] @ posted-write barrier for SDRC
+idle_sdrc:
ldr r11, omap3_cm_iclken1_core @ read the CM_ICLKEN1_CORE reg
ldr r12, [r11]
- bic r12, r12, #0x2 @ disable iclk bit for SDRC
+ bic r12, r12, #EN_SDRC_MASK @ disable iclk bit for SDRC
str r12, [r11]
wait_sdrc_idle:
ldr r11, omap3_cm_idlest1_core
ldr r12, [r11]
- and r12, r12, #0x2 @ check for SDRC idle
- cmp r12, #2
+ and r12, r12, #ST_SDRC_MASK @ check for SDRC idle
+ cmp r12, #ST_SDRC_MASK
bne wait_sdrc_idle
bx lr
configure_core_dpll:
@@ -99,36 +149,23 @@ configure_core_dpll:
ldr r12, [r11]
ldr r10, core_m2_mask_val @ modify m2 for core dpll
and r12, r12, r10
- orr r12, r12, r3, lsl #0x1B @ r3 contains the M2 val
+ orr r12, r12, r3, lsl #CORE_DPLL_CLKOUT_DIV_SHIFT
str r12, [r11]
ldr r12, [r11] @ posted-write barrier for CM
- mov r12, #0x800 @ wait for the clock to stabilise
- cmp r3, #2
- bne wait_clk_stable
bx lr
wait_clk_stable:
subs r12, r12, #1
bne wait_clk_stable
- nop
- nop
- nop
- nop
- nop
- nop
- nop
- nop
- nop
- nop
bx lr
enable_sdrc:
ldr r11, omap3_cm_iclken1_core
ldr r12, [r11]
- orr r12, r12, #0x2 @ enable iclk bit for SDRC
+ orr r12, r12, #EN_SDRC_MASK @ enable iclk bit for SDRC
str r12, [r11]
wait_sdrc_idle1:
ldr r11, omap3_cm_idlest1_core
ldr r12, [r11]
- and r12, r12, #0x2
+ and r12, r12, #ST_SDRC_MASK
cmp r12, #0
bne wait_sdrc_idle1
restore_sdrc_power_val:
@@ -138,14 +175,14 @@ restore_sdrc_power_val:
wait_dll_lock:
ldr r11, omap3_sdrc_dlla_status
ldr r12, [r11]
- and r12, r12, #0x4
- cmp r12, #0x4
+ and r12, r12, #LOCKSTATUS_MASK
+ cmp r12, #LOCKSTATUS_MASK
bne wait_dll_lock
bx lr
wait_dll_unlock:
ldr r11, omap3_sdrc_dlla_status
ldr r12, [r11]
- and r12, r12, #0x4
+ and r12, r12, #LOCKSTATUS_MASK
cmp r12, #0x0
bne wait_dll_unlock
bx lr
@@ -156,7 +193,9 @@ configure_sdrc:
str r1, [r11]
ldr r11, omap3_sdrc_actim_ctrlb
str r2, [r11]
- ldr r2, [r11] @ posted-write barrier for SDRC
+ ldr r11, omap3_sdrc_mr_0
+ str r6, [r11]
+ ldr r6, [r11] @ posted-write barrier for SDRC
bx lr
omap3_sdrc_power:
@@ -173,6 +212,8 @@ omap3_sdrc_actim_ctrla:
.word OMAP34XX_SDRC_REGADDR(SDRC_ACTIM_CTRL_A_0)
omap3_sdrc_actim_ctrlb:
.word OMAP34XX_SDRC_REGADDR(SDRC_ACTIM_CTRL_B_0)
+omap3_sdrc_mr_0:
+ .word OMAP34XX_SDRC_REGADDR(SDRC_MR_0)
omap3_sdrc_dlla_status:
.word OMAP34XX_SDRC_REGADDR(SDRC_DLLA_STATUS)
omap3_sdrc_dlla_ctrl:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-12 14:19:55 +0000