From 05c57e12d17b0a601b9a136ff03dac5b538c0845 Mon Sep 17 00:00:00 2001
From: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Date: Tue, 4 Jul 2017 14:50:11 +0200
Subject: [PATCH] rockchip: clk: rk3368: define DMA1_SRST_REQ and DMA2_SRST_REQ
On he RK3368, we need to temporarily disable security on the DMA
engines during TPL and SPL to allow the MMC host to DMA into DRAM. To
do so, we need to reset the two DMA engines, which in turn requires
the DMA1_SRST_REQ and DMA2_SRST_REQ constants to refer to the
appropriate bits in the CRU.
As the ATF correctly initialises security (and only leaves EL3 after
doing so), this can not pose a security issue.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
arch/arm/include/asm/arch-rockchip/cru_rk3368.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3368.h b/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
index 24a9cc0525..bf09e2fa68 100644
--- a/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
+++ b/arch/arm/include/asm/arch-rockchip/cru_rk3368.h
@@ -102,6 +102,10 @@ enum {
/* SOFTRST1_CON */
MCU_PO_SRST_MASK = BIT(13),
MCU_SYS_SRST_MASK = BIT(12),
+ DMA1_SRST_REQ = BIT(2),
+
+ /* SOFTRST4_CON */
+ DMA2_SRST_REQ = BIT(0),
/* GLB_RST_CON */
PMU_GLB_SRST_CTRL_SHIFT = 2,
--
2.39.5