Add the compatible entry and corresponding chip data for Exynos7
compatible chips, which covers modern ARM64 based Exynos chips. They
have some differences w.r.t. old ARM32 Exynos chips:
- CLKSEL register offset is different
- 64-bit IDMAC descriptor and 64-bit IDMAC registers are used
(implemented in dw_mmc core driver)
In terms of the driver implementation, the CIU clock is obtained via CCF
framework (as opposed to ad-hoc clock driver implementation for ARM32
chips).
Signed-off-by: Sam Protsenko <semen.protse...@linaro.org>
---
Changes in v4:
- (none)
Changes in v3:
- (none)
Changes in v2:
- (none)
arch/arm/mach-exynos/include/mach/dwmmc.h | 1 +
drivers/mmc/exynos_dw_mmc.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/arch/arm/mach-exynos/include/mach/dwmmc.h
b/arch/arm/mach-exynos/include/mach/dwmmc.h
index 811e9a04c6e3..7cb71be0d9fd 100644
--- a/arch/arm/mach-exynos/include/mach/dwmmc.h
+++ b/arch/arm/mach-exynos/include/mach/dwmmc.h
@@ -8,6 +8,7 @@
#define __ASM_ARM_ARCH_DWMMC_H
#define DWMCI_CLKSEL 0x09C
+#define DWMCI_CLKSEL64 0x0a8
#define DWMCI_SET_SAMPLE_CLK(x) (x)
#define DWMCI_SET_DRV_CLK(x) ((x) << 16)
#define DWMCI_SET_DIV_RATIO(x) ((x) << 24)
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index ee3ae9f5e650..29241edf7915 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -385,6 +385,11 @@ static const struct exynos_dwmmc_variant exynos5_drv_data
= {
#endif
};
+static const struct exynos_dwmmc_variant exynos7_smu_drv_data = {
+ .clksel = DWMCI_CLKSEL64,
+ .quirks = DWMCI_QUIRK_DISABLE_SMU,
+};
+
static const struct udevice_id exynos_dwmmc_ids[] = {
{
.compatible = "samsung,exynos4412-dw-mshc",
@@ -392,6 +397,9 @@ static const struct udevice_id exynos_dwmmc_ids[] = {
}, {
.compatible = "samsung,exynos-dwmmc",
.data = (ulong)&exynos5_drv_data,
+ }, {
+ .compatible = "samsung,exynos7-dw-mshc-smu",
+ .data = (ulong)&exynos7_smu_drv_data,
},
{ }
};
--
2.39.2
