ARM: imx: Get the silicon version from the IIM module
Instead of reading the silicon version from ROM, we should
read the SREV register from the IIM.
Freescale has dropped all support for MX51 REV1.0, only MX51
REV 2.0 and 3.0 are valid.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c
index 98a25ba..2202b88 100644
--- a/arch/arm/mach-imx/clock-imx27.c
+++ b/arch/arm/mach-imx/clock-imx27.c
@@ -125,7 +125,7 @@
if (clk->parent == parent)
return 0;
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
if (parent == &mpll_main1_clk) {
cscr |= CCM_CSCR_ARM_SRC;
} else {
@@ -174,7 +174,7 @@
div--;
reg = __raw_readl(CCM_CSCR);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
reg &= ~(3 << 12);
reg |= div << 12;
reg &= ~(CCM_CSCR_FPM | CCM_CSCR_SPEN);
@@ -244,7 +244,7 @@
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
pdf += 4; /* MX27 TO2+ */
else
pdf = (pdf < 2) ? 124UL : pdf; /* MX21 & MX27 TO1 */
@@ -269,7 +269,7 @@
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
nfc_pdf = (__raw_readl(CCM_PCDR0) >> 6) & 0xf;
else
nfc_pdf = (__raw_readl(CCM_PCDR0) >> 12) & 0xf;
@@ -284,7 +284,7 @@
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
vpu_pdf = (__raw_readl(CCM_PCDR0) >> 10) & 0x3f;
vpu_pdf += 4;
} else {
@@ -347,7 +347,7 @@
* clk->id == 0: arm clock source path 1 which is from 2 * MPLL / 2
* clk->id == 1: arm clock source path 2 which is from 2 * MPLL / 3
*/
- if (mx27_revision() >= CHIP_REV_2_0 && clk->id == 1)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0 && clk->id == 1)
return 2UL * parent_rate / 3UL;
return parent_rate;
@@ -365,7 +365,7 @@
/* On TO2 we have to write the value back. Otherwise we
* read 0 from this register the next time.
*/
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
__raw_writel(reg, CCM_SPCTL0);
return mxc_decode_pll(reg, rate);
@@ -376,7 +376,7 @@
u32 div;
unsigned long rate;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
div = (__raw_readl(CCM_CSCR) >> 12) & 0x3;
else
div = (__raw_readl(CCM_CSCR) >> 13) & 0x7;
@@ -389,7 +389,7 @@
{
unsigned long rate, bclk_pdf;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
bclk_pdf = (__raw_readl(CCM_CSCR) >> 8) & 0x3;
else
bclk_pdf = (__raw_readl(CCM_CSCR) >> 9) & 0xf;
@@ -402,7 +402,7 @@
{
unsigned long rate, ipg_pdf;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
return clk_get_rate(clk->parent);
else
ipg_pdf = (__raw_readl(CCM_CSCR) >> 8) & 1;
@@ -683,7 +683,7 @@
{
unsigned long cscr = __raw_readl(CCM_CSCR);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
if (cscr & CCM_CSCR_ARM_SRC)
cpu_clk.parent = &mpll_main1_clk;
diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c
index d8d3b2d..3b117be 100644
--- a/arch/arm/mach-imx/cpu-imx27.c
+++ b/arch/arm/mach-imx/cpu-imx27.c
@@ -42,7 +42,19 @@
val = __raw_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR
+ SYS_CHIP_ID));
- cpu_silicon_rev = (int)(val >> 28);
+ switch (val >> 28) {
+ case 0:
+ cpu_silicon_rev = IMX_CHIP_REVISION_1_0;
+ break;
+ case 1:
+ cpu_silicon_rev = IMX_CHIP_REVISION_2_0;
+ break;
+ case 2:
+ cpu_silicon_rev = IMX_CHIP_REVISION_2_1;
+ break;
+ default:
+ cpu_silicon_rev = IMX_CHIP_REVISION_UNKNOWN;
+ }
cpu_partnumber = (int)((val >> 12) & 0xFFFF);
}
diff --git a/arch/arm/mach-mx3/clock-imx31.c b/arch/arm/mach-mx3/clock-imx31.c
index 109e98f..7cf6d29 100644
--- a/arch/arm/mach-mx3/clock-imx31.c
+++ b/arch/arm/mach-mx3/clock-imx31.c
@@ -615,7 +615,7 @@
mx31_read_cpu_rev();
- if (mx31_revision() >= MX31_CHIP_REV_2_0) {
+ if (mx31_revision() >= IMX_CHIP_REVISION_2_0) {
reg = __raw_readl(MXC_CCM_PMCR1);
/* No PLL restart on DVFS switch; enable auto EMI handshake */
reg |= MXC_CCM_PMCR1_PLLRDIS | MXC_CCM_PMCR1_EMIRQ_EN;
diff --git a/arch/arm/mach-mx3/cpu.c b/arch/arm/mach-mx3/cpu.c
index d00a754..d1d3395 100644
--- a/arch/arm/mach-mx3/cpu.c
+++ b/arch/arm/mach-mx3/cpu.c
@@ -25,15 +25,15 @@
};
static struct mx3_cpu_type mx31_cpu_type[] __initdata = {
- { .srev = 0x00, .name = "i.MX31(L)", .v = "1.0", .rev = MX3x_CHIP_REV_1_0 },
- { .srev = 0x10, .name = "i.MX31", .v = "1.1", .rev = MX3x_CHIP_REV_1_1 },
- { .srev = 0x11, .name = "i.MX31L", .v = "1.1", .rev = MX3x_CHIP_REV_1_1 },
- { .srev = 0x12, .name = "i.MX31", .v = "1.15", .rev = MX3x_CHIP_REV_1_1 },
- { .srev = 0x13, .name = "i.MX31L", .v = "1.15", .rev = MX3x_CHIP_REV_1_1 },
- { .srev = 0x14, .name = "i.MX31", .v = "1.2", .rev = MX3x_CHIP_REV_1_2 },
- { .srev = 0x15, .name = "i.MX31L", .v = "1.2", .rev = MX3x_CHIP_REV_1_2 },
- { .srev = 0x28, .name = "i.MX31", .v = "2.0", .rev = MX3x_CHIP_REV_2_0 },
- { .srev = 0x29, .name = "i.MX31L", .v = "2.0", .rev = MX3x_CHIP_REV_2_0 },
+ { .srev = 0x00, .name = "i.MX31(L)", .v = "1.0", .rev = IMX_CHIP_REVISION_1_0 },
+ { .srev = 0x10, .name = "i.MX31", .v = "1.1", .rev = IMX_CHIP_REVISION_1_1 },
+ { .srev = 0x11, .name = "i.MX31L", .v = "1.1", .rev = IMX_CHIP_REVISION_1_1 },
+ { .srev = 0x12, .name = "i.MX31", .v = "1.15", .rev = IMX_CHIP_REVISION_1_1 },
+ { .srev = 0x13, .name = "i.MX31L", .v = "1.15", .rev = IMX_CHIP_REVISION_1_1 },
+ { .srev = 0x14, .name = "i.MX31", .v = "1.2", .rev = IMX_CHIP_REVISION_1_2 },
+ { .srev = 0x15, .name = "i.MX31L", .v = "1.2", .rev = IMX_CHIP_REVISION_1_2 },
+ { .srev = 0x28, .name = "i.MX31", .v = "2.0", .rev = IMX_CHIP_REVISION_2_0 },
+ { .srev = 0x29, .name = "i.MX31L", .v = "2.0", .rev = IMX_CHIP_REVISION_2_0 },
};
void __init mx31_read_cpu_rev(void)
@@ -53,6 +53,8 @@
return;
}
+ mx31_cpu_rev = IMX_CHIP_REVISION_UNKNOWN;
+
printk(KERN_WARNING "Unknown CPU identifier. srev = %02x\n", srev);
}
@@ -62,22 +64,25 @@
void __init mx35_read_cpu_rev(void)
{
u32 rev;
- char *srev = "unknown";
+ char *srev;
rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV));
switch (rev) {
case 0x00:
- mx35_cpu_rev = MX3x_CHIP_REV_1_0;
+ mx35_cpu_rev = IMX_CHIP_REVISION_1_0;
srev = "1.0";
break;
case 0x10:
- mx35_cpu_rev = MX3x_CHIP_REV_2_0;
+ mx35_cpu_rev = IMX_CHIP_REVISION_2_0;
srev = "2.0";
break;
case 0x11:
- mx35_cpu_rev = MX3x_CHIP_REV_2_1;
+ mx35_cpu_rev = IMX_CHIP_REVISION_2_1;
srev = "2.1";
break;
+ default:
+ mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN;
+ srev = "unknown";
}
printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev);
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
index ca4f9d5..344ee8e 100644
--- a/arch/arm/mach-mx5/clock-mx51-mx53.c
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -780,6 +780,12 @@
.round_rate = _clk_ahb_round_rate,
};
+static struct clk iim_clk = {
+ .parent = &ipg_clk,
+ .enable_reg = MXC_CCM_CCGR0,
+ .enable_shift = MXC_CCM_CCGRx_CG15_OFFSET,
+};
+
/* Main IP interface clock for access to registers */
static struct clk ipg_clk = {
.parent = &ahb_clk,
@@ -1099,6 +1105,7 @@
_REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk)
_REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk)
_REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk)
+ _REGISTER_CLOCK(NULL, "iim_clk", iim_clk)
};
static struct clk_lookup mx53_lookups[] = {
@@ -1107,6 +1114,7 @@
_REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
_REGISTER_CLOCK(NULL, "gpt", gpt_clk)
_REGISTER_CLOCK("fec.0", NULL, fec_clk)
+ _REGISTER_CLOCK(NULL, "iim_clk", iim_clk)
};
static void clk_tree_init(void)
@@ -1147,6 +1155,10 @@
clk_enable(&cpu_clk);
clk_enable(&main_bus_clk);
+ clk_enable(&iim_clk);
+ mx51_revision();
+ clk_disable(&iim_clk);
+
/* set the usboh3_clk parent to pll2_sw_clk */
clk_set_parent(&usboh3_clk, &pll2_sw_clk);
@@ -1182,6 +1194,10 @@
clk_enable(&cpu_clk);
clk_enable(&main_bus_clk);
+ clk_enable(&iim_clk);
+ mx53_revision();
+ clk_disable(&iim_clk);
+
/* System timer */
mxc_timer_init(&gpt_clk, MX53_IO_ADDRESS(MX53_GPT1_BASE_ADDR),
MX53_INT_GPT);
diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c
index a00d2bc..d40671d 100644
--- a/arch/arm/mach-mx5/cpu.c
+++ b/arch/arm/mach-mx5/cpu.c
@@ -20,37 +20,18 @@
static int cpu_silicon_rev = -1;
-#define SI_REV 0x48
+#define IIM_SREV 0x24
-static void query_silicon_parameter(void)
+static int get_mx51_srev(void)
{
- void __iomem *rom = ioremap(MX51_IROM_BASE_ADDR, MX51_IROM_SIZE);
- u32 rev;
+ void __iomem *iim_base = MX51_IO_ADDRESS(MX51_IIM_BASE_ADDR);
+ u32 rev = readl(iim_base + IIM_SREV) & 0xff;
- if (!rom) {
- cpu_silicon_rev = -EINVAL;
- return;
- }
-
- rev = readl(rom + SI_REV);
- switch (rev) {
- case 0x1:
- cpu_silicon_rev = MX51_CHIP_REV_1_0;
- break;
- case 0x2:
- cpu_silicon_rev = MX51_CHIP_REV_1_1;
- break;
- case 0x10:
- cpu_silicon_rev = MX51_CHIP_REV_2_0;
- break;
- case 0x20:
- cpu_silicon_rev = MX51_CHIP_REV_3_0;
- break;
- default:
- cpu_silicon_rev = 0;
- }
-
- iounmap(rom);
+ if (rev == 0x0)
+ return IMX_CHIP_REVISION_2_0;
+ else if (rev == 0x10)
+ return IMX_CHIP_REVISION_3_0;
+ return 0;
}
/*
@@ -64,7 +45,7 @@
return -EINVAL;
if (cpu_silicon_rev == -1)
- query_silicon_parameter();
+ cpu_silicon_rev = get_mx51_srev();
return cpu_silicon_rev;
}
@@ -82,7 +63,7 @@
if (!cpu_is_mx51())
return 0;
- if (mx51_revision() < MX51_CHIP_REV_3_0 && (elf_hwcap & HWCAP_NEON)) {
+ if (mx51_revision() < IMX_CHIP_REVISION_3_0 && (elf_hwcap & HWCAP_NEON)) {
elf_hwcap &= ~HWCAP_NEON;
pr_info("Turning off NEON support, detected broken NEON implementation\n");
}
@@ -92,6 +73,18 @@
late_initcall(mx51_neon_fixup);
#endif
+static int get_mx53_srev(void)
+{
+ void __iomem *iim_base = MX51_IO_ADDRESS(MX53_IIM_BASE_ADDR);
+ u32 rev = readl(iim_base + IIM_SREV) & 0xff;
+
+ if (rev == 0x0)
+ return IMX_CHIP_REVISION_1_0;
+ else if (rev == 0x10)
+ return IMX_CHIP_REVISION_2_0;
+ return 0;
+}
+
/*
* Returns:
* the silicon revision of the cpu
@@ -103,7 +96,7 @@
return -EINVAL;
if (cpu_silicon_rev == -1)
- query_silicon_parameter();
+ cpu_silicon_rev = get_mx53_srev();
return cpu_silicon_rev;
}
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index cbaf282..e57f968 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -68,7 +68,7 @@
unsigned long tzic_addr;
void __iomem *tzic_virt;
- if (mx51_revision() < MX51_CHIP_REV_2_0)
+ if (mx51_revision() < IMX_CHIP_REVISION_2_0)
tzic_addr = MX51_TZIC_BASE_ADDR_TO1;
else
tzic_addr = MX51_TZIC_BASE_ADDR;
diff --git a/arch/arm/plat-mxc/include/mach/mx27.h b/arch/arm/plat-mxc/include/mach/mx27.h
index eb09ec0..cbc43ad 100644
--- a/arch/arm/plat-mxc/include/mach/mx27.h
+++ b/arch/arm/plat-mxc/include/mach/mx27.h
@@ -244,10 +244,6 @@
#define MX27_DMA_REQ_SDHC3 36
#define MX27_DMA_REQ_NFC 37
-/* silicon revisions specific to i.MX27 */
-#define CHIP_REV_1_0 0x00
-#define CHIP_REV_2_0 0x01
-
#ifndef __ASSEMBLY__
extern int mx27_revision(void);
#endif
diff --git a/arch/arm/plat-mxc/include/mach/mx31.h b/arch/arm/plat-mxc/include/mach/mx31.h
index 09232314..79e7fc0 100644
--- a/arch/arm/plat-mxc/include/mach/mx31.h
+++ b/arch/arm/plat-mxc/include/mach/mx31.h
@@ -203,20 +203,4 @@
#define MX31_PROD_SIGNATURE 0x1 /* For MX31 */
-/* silicon revisions specific to i.MX31 */
-#define MX31_CHIP_REV_1_0 0x10
-#define MX31_CHIP_REV_1_1 0x11
-#define MX31_CHIP_REV_1_2 0x12
-#define MX31_CHIP_REV_1_3 0x13
-#define MX31_CHIP_REV_2_0 0x20
-#define MX31_CHIP_REV_2_1 0x21
-#define MX31_CHIP_REV_2_2 0x22
-#define MX31_CHIP_REV_2_3 0x23
-#define MX31_CHIP_REV_3_0 0x30
-#define MX31_CHIP_REV_3_1 0x31
-#define MX31_CHIP_REV_3_2 0x32
-
-#define MX31_SYSTEM_REV_MIN MX31_CHIP_REV_1_0
-#define MX31_SYSTEM_REV_NUM 3
-
#endif /* ifndef __MACH_MX31_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx35.h b/arch/arm/plat-mxc/include/mach/mx35.h
index 0fa3f68..d13dbfe 100644
--- a/arch/arm/plat-mxc/include/mach/mx35.h
+++ b/arch/arm/plat-mxc/include/mach/mx35.h
@@ -186,7 +186,4 @@
#define MX35_PROD_SIGNATURE 0x1 /* For MX31 */
-#define MX35_SYSTEM_REV_MIN MX3x_CHIP_REV_1_0
-#define MX35_SYSTEM_REV_NUM 3
-
#endif /* ifndef __MACH_MX35_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx3x.h b/arch/arm/plat-mxc/include/mach/mx3x.h
index 8c7f34e..388a407 100644
--- a/arch/arm/plat-mxc/include/mach/mx3x.h
+++ b/arch/arm/plat-mxc/include/mach/mx3x.h
@@ -184,22 +184,6 @@
#define MX3x_PROD_SIGNATURE 0x1 /* For MX31 */
-/* silicon revisions specific to i.MX31 and i.MX35 */
-#define MX3x_CHIP_REV_1_0 0x10
-#define MX3x_CHIP_REV_1_1 0x11
-#define MX3x_CHIP_REV_1_2 0x12
-#define MX3x_CHIP_REV_1_3 0x13
-#define MX3x_CHIP_REV_2_0 0x20
-#define MX3x_CHIP_REV_2_1 0x21
-#define MX3x_CHIP_REV_2_2 0x22
-#define MX3x_CHIP_REV_2_3 0x23
-#define MX3x_CHIP_REV_3_0 0x30
-#define MX3x_CHIP_REV_3_1 0x31
-#define MX3x_CHIP_REV_3_2 0x32
-
-#define MX3x_SYSTEM_REV_MIN MX3x_CHIP_REV_1_0
-#define MX3x_SYSTEM_REV_NUM 3
-
/* Mandatory defines used globally */
#if !defined(__ASSEMBLY__) && !defined(__MXC_BOOT_UNCOMPRESS)
diff --git a/arch/arm/plat-mxc/include/mach/mx51.h b/arch/arm/plat-mxc/include/mach/mx51.h
index 636347c..8fddfef 100644
--- a/arch/arm/plat-mxc/include/mach/mx51.h
+++ b/arch/arm/plat-mxc/include/mach/mx51.h
@@ -345,19 +345,6 @@
#define MX51_MXC_INT_EMI_NFC 101
#define MX51_MXC_INT_GPU_IDLE 102
-/* silicon revisions specific to i.MX51 */
-#define MX51_CHIP_REV_1_0 0x10
-#define MX51_CHIP_REV_1_1 0x11
-#define MX51_CHIP_REV_1_2 0x12
-#define MX51_CHIP_REV_1_3 0x13
-#define MX51_CHIP_REV_2_0 0x20
-#define MX51_CHIP_REV_2_1 0x21
-#define MX51_CHIP_REV_2_2 0x22
-#define MX51_CHIP_REV_2_3 0x23
-#define MX51_CHIP_REV_3_0 0x30
-#define MX51_CHIP_REV_3_1 0x31
-#define MX51_CHIP_REV_3_2 0x32
-
#if !defined(__ASSEMBLY__) && !defined(__MXC_BOOT_UNCOMPRESS)
extern int mx51_revision(void);
#endif
diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index 4c17515..4abbdd1 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -36,6 +36,20 @@
#define MXC_CPU_MX53 53
#define MXC_CPU_MXC91231 91231
+#define IMX_CHIP_REVISION_1_0 0x10
+#define IMX_CHIP_REVISION_1_1 0x11
+#define IMX_CHIP_REVISION_1_2 0x12
+#define IMX_CHIP_REVISION_1_3 0x13
+#define IMX_CHIP_REVISION_2_0 0x20
+#define IMX_CHIP_REVISION_2_1 0x21
+#define IMX_CHIP_REVISION_2_2 0x22
+#define IMX_CHIP_REVISION_2_3 0x23
+#define IMX_CHIP_REVISION_3_0 0x30
+#define IMX_CHIP_REVISION_3_1 0x31
+#define IMX_CHIP_REVISION_3_2 0x32
+#define IMX_CHIP_REVISION_3_3 0x33
+#define IMX_CHIP_REVISION_UNKNOWN 0xff
+
#ifndef __ASSEMBLY__
extern unsigned int __mxc_cpu_type;
#endif