[U-Boot] [PATCH] mx7: Distinguish between dual and solo versions

[Peng Fan <van.freenix@gmail.com>]

Hi Fabio,

On Sun, Feb 28, 2016 at 12:33:17PM -0300, Fabio Estevam wrote:
>From: Fabio Estevam <fabio.estevam@nxp.com>
>
>Read the number of cores in the fuses to distinguish between
>the dual and solo versions.
>
>Tested on a mx7d sabresd and on a mx7solo warp7.
>
>Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
>---
> arch/arm/cpu/armv7/mx7/soc.c        | 18 ++++++++++++++++++
> arch/arm/imx-common/cpu.c           |  2 ++
> arch/arm/include/asm/arch-imx/cpu.h |  1 +
> 3 files changed, 21 insertions(+)
>
>diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c
>index ba6cfb9..073bbc6 100644
>--- a/arch/arm/cpu/armv7/mx7/soc.c
>+++ b/arch/arm/cpu/armv7/mx7/soc.c
>@@ -165,6 +165,21 @@ u32 get_cpu_temp_grade(int *minc, int *maxc)
> 	return val;
> }
> 
>+static bool is_mx7d(void)
>+{
>+	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
>+	struct fuse_bank *bank = &ocotp->bank[1];
>+	struct fuse_bank1_regs *fuse =
>+		(struct fuse_bank1_regs *)bank->fuse_regs;
>+	int val;
>+
>+	val = readl(&fuse->tester4);
>+	if (val & 1)
>+		return false;
>+	else
>+		return true;
>+}
>+
> u32 get_cpu_rev(void)
> {
> 	struct mxc_ccm_anatop_reg *ccm_anatop = (struct mxc_ccm_anatop_reg *)
>@@ -172,6 +187,9 @@ u32 get_cpu_rev(void)
> 	u32 reg = readl(&ccm_anatop->digprog);
> 	u32 type = (reg >> 16) & 0xff;
> 
>+	if (!is_mx7d())
>+		type = MXC_CPU_MX7S;
>+
> 	reg &= 0xff;
> 	return (type << 12) | reg;
> }
>diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
>index 656bb60..5fb3ed8 100644
>--- a/arch/arm/imx-common/cpu.c
>+++ b/arch/arm/imx-common/cpu.c
>@@ -137,6 +137,8 @@ unsigned imx_ddr_size(void)
> const char *get_imx_type(u32 imxtype)
> {
> 	switch (imxtype) {
>+	case MXC_CPU_MX7S:
>+		return "7SOLO";	/* Single-core version of the mx7 */
> 	case MXC_CPU_MX7D:
> 		return "7D";	/* Dual-core version of the mx7 */
> 	case MXC_CPU_MX6QP:
>diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
>index 8a75902..7c63c13 100644
>--- a/arch/arm/include/asm/arch-imx/cpu.h
>+++ b/arch/arm/include/asm/arch-imx/cpu.h
>@@ -21,6 +21,7 @@
> #define MXC_CPU_MX6D		0x67
> #define MXC_CPU_MX6DP		0x68
> #define MXC_CPU_MX6QP		0x69
>+#define MXC_CPU_MX7S		0x71 /* dummy ID */
> #define MXC_CPU_MX7D		0x72
> #define MXC_CPU_VF610		0xF6 /* dummy ID */

Reviewed-by: Peng Fan <peng.fan@nxp.com>

Regards,
Peng.
> 
>-- 
>1.9.1
>
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