diff options
| author | Chia-Wei, Wang <chiawei_wang@aspeedtech.com> | 2021-03-19 16:57:36 +1030 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2021-04-09 13:39:22 +0930 |
| commit | 489774ff5db943642751f4f0fdac9033239208c6 (patch) | |
| tree | d9edcc3fbc4a2c47cae47ccfa78c92e347996345 /drivers/soc/aspeed/aspeed-lpc-ctrl.c | |
| parent | pinctrl: aspeed-g5: Adapt to new LPC device tree layout (diff) | |
| download | linux-489774ff5db943642751f4f0fdac9033239208c6.tar.gz linux-489774ff5db943642751f4f0fdac9033239208c6.zip | |
soc: aspeed: Adapt to new LPC device tree layout
Add check against LPC device v2 compatible string to
ensure that the fixed device tree layout is adopted.
The LPC register offsets are also fixed accordingly.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210319062752.145730-5-andrew@aj.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/soc/aspeed/aspeed-lpc-ctrl.c')
| -rw-r--r-- | drivers/soc/aspeed/aspeed-lpc-ctrl.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c b/drivers/soc/aspeed/aspeed-lpc-ctrl.c index 439bcd6b8c4a..c557ffd0992c 100644 --- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c +++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c @@ -18,15 +18,15 @@ #define DEVICE_NAME "aspeed-lpc-ctrl" -#define HICR5 0x0 +#define HICR5 0x80 #define HICR5_ENL2H BIT(8) #define HICR5_ENFWH BIT(10) -#define HICR6 0x4 +#define HICR6 0x84 #define SW_FWH2AHB BIT(17) -#define HICR7 0x8 -#define HICR8 0xc +#define HICR7 0x88 +#define HICR8 0x8c struct aspeed_lpc_ctrl { struct miscdevice miscdev; @@ -215,6 +215,7 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev) struct device_node *node; struct resource resm; struct device *dev; + struct device_node *np; int rc; dev = &pdev->dev; @@ -270,8 +271,15 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev) } } - lpc_ctrl->regmap = syscon_node_to_regmap( - pdev->dev.parent->of_node); + np = pdev->dev.parent->of_node; + if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && + !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && + !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { + dev_err(dev, "unsupported LPC device binding\n"); + return -ENODEV; + } + + lpc_ctrl->regmap = syscon_node_to_regmap(np); if (IS_ERR(lpc_ctrl->regmap)) { dev_err(dev, "Couldn't get regmap\n"); return -ENODEV; |