From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonas Karlman Date: Tue, 13 Oct 2020 20:21:19 +0000 (UTC) Subject: [PATCH 1/3] rockchip: efuse: add support for RK3288 non-secure efuse In-Reply-To: <20201013202116.24850-1-jonas@kwiboo.se> References: <20201013202116.24850-1-jonas@kwiboo.se> Message-ID: <20201013202116.24850-2-jonas@kwiboo.se> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Francis Fan Extend rockchip efuse driver with support for RK3288 non-secure efuse. Signed-off-by: Francis Fan Signed-off-by: Cody Xie Signed-off-by: Jonas Karlman --- drivers/misc/rockchip-efuse.c | 91 +++++++++++++++++++++++++++++++++-- 1 file changed, 87 insertions(+), 4 deletions(-) diff --git a/drivers/misc/rockchip-efuse.c b/drivers/misc/rockchip-efuse.c index 46ce6305fe..20423544d9 100644 --- a/drivers/misc/rockchip-efuse.c +++ b/drivers/misc/rockchip-efuse.c @@ -27,6 +27,17 @@ #define RK3399_STROBE BIT(1) #define RK3399_CSB BIT(0) +#define RK3288_A_SHIFT 6 +#define RK3288_A_MASK 0x3ff +#define RK3288_NFUSES 32 +#define RK3288_BYTES_PER_FUSE 1 +#define RK3288_PGENB BIT(3) +#define RK3288_LOAD BIT(2) +#define RK3288_STROBE BIT(1) +#define RK3288_CSB BIT(0) + +typedef int (*EFUSE_READ)(struct udevice *dev, int offset, void *buf, int size); + struct rockchip_efuse_regs { u32 ctrl; /* 0x00 efuse control register */ u32 dout; /* 0x04 efuse data out register */ @@ -53,7 +64,7 @@ static int dump_efuses(struct cmd_tbl *cmdtp, int flag, */ struct udevice *dev; - u8 fuses[128]; + u8 fuses[128] = {0}; int ret; /* retrieve the device */ @@ -77,7 +88,7 @@ static int dump_efuses(struct cmd_tbl *cmdtp, int flag, } U_BOOT_CMD( - rk3399_dump_efuses, 1, 1, dump_efuses, + rockchip_dump_efuses, 1, 1, dump_efuses, "Dump the content of the efuses", "" ); @@ -127,10 +138,59 @@ static int rockchip_rk3399_efuse_read(struct udevice *dev, int offset, return 0; } +static int rockchip_rk3288_efuse_read(struct udevice *dev, int offset, + void *buf, int size) +{ + struct rockchip_efuse_platdata *plat = dev_get_platdata(dev); + struct rockchip_efuse_regs *efuse = + (struct rockchip_efuse_regs *)plat->base; + u8 *buffer = buf; + int max_size = RK3288_NFUSES * RK3288_BYTES_PER_FUSE; + + if (size > (max_size - offset)) + size = max_size - offset; + + /* Switch to read mode */ + writel(RK3288_LOAD | RK3288_PGENB, &efuse->ctrl); + udelay(1); + + while (size--) { + writel(readl(&efuse->ctrl) & + (~(RK3288_A_MASK << RK3288_A_SHIFT)), + &efuse->ctrl); + /* set addr */ + writel(readl(&efuse->ctrl) | + ((offset++ & RK3288_A_MASK) << RK3288_A_SHIFT), + &efuse->ctrl); + udelay(1); + /* strobe low to high */ + writel(readl(&efuse->ctrl) | + RK3288_STROBE, &efuse->ctrl); + ndelay(60); + /* read data */ + *buffer++ = readl(&efuse->dout); + /* reset strobe to low */ + writel(readl(&efuse->ctrl) & + (~RK3288_STROBE), &efuse->ctrl); + udelay(1); + } + + /* Switch to standby mode */ + writel(RK3288_PGENB | RK3288_CSB, &efuse->ctrl); + + return 0; +} + static int rockchip_efuse_read(struct udevice *dev, int offset, void *buf, int size) { - return rockchip_rk3399_efuse_read(dev, offset, buf, size); + EFUSE_READ efuse_read = NULL; + + efuse_read = (EFUSE_READ)dev_get_driver_data(dev); + if (!efuse_read) + return -ENOSYS; + + return (*efuse_read)(dev, offset, buf, size); } static const struct misc_ops rockchip_efuse_ops = { @@ -146,7 +206,30 @@ static int rockchip_efuse_ofdata_to_platdata(struct udevice *dev) } static const struct udevice_id rockchip_efuse_ids[] = { - { .compatible = "rockchip,rk3399-efuse" }, + { + .compatible = "rockchip,rk3066a-efuse", + .data = (ulong)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3188-efuse", + .data = (ulong)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3228-efuse", + .data = (ulong)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3288-efuse", + .data = (ulong)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3368-efuse", + .data = (ulong)&rockchip_rk3288_efuse_read, + }, + { + .compatible = "rockchip,rk3399-efuse", + .data = (ulong)&rockchip_rk3399_efuse_read, + }, {} }; -- 2.17.1