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authorJun Nie <jun.nie@linaro.org>2018-06-28 16:38:11 +0800
committerBryan O'Donoghue <bryan.odonoghue@linaro.org>2018-09-04 13:36:22 +0100
commit14cf32aaa72fabb13f60e85c2a4c8bf9422c22ec (patch)
tree4e1f33739147fa1aa5d5b49afad98cf51e0d3610 /plat/imx/common/imx_clock.c
parentdcd54e9b4cbe0e771e63f0e53f2d3a59198b48d3 (diff)
downloadtrusted-firmware-a-14cf32aaa72fabb13f60e85c2a4c8bf9422c22ec.tar.gz
imx: imx_clock: mmc: Add USDHC clock API
This patch adds an API to configure up the base USDHC clocks, taking a bit-mask of silicon specific bits as an input from a higher layer in order to direct the necessary clock source. Signed-off-by: Jun Nie <jun.nie@linaro.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Diffstat (limited to 'plat/imx/common/imx_clock.c')
-rw-r--r--plat/imx/common/imx_clock.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/plat/imx/common/imx_clock.c b/plat/imx/common/imx_clock.c
index 8fb42e3e0c..0a13d4db9f 100644
--- a/plat/imx/common/imx_clock.c
+++ b/plat/imx/common/imx_clock.c
@@ -82,3 +82,19 @@ void imx_clock_disable_uart(unsigned int uart_id)
/* Clear the target */
imx_clock_target_clr(ccm_trgt_id, 0xFFFFFFFF);
}
+
+void imx_clock_enable_usdhc(unsigned int usdhc_id, uint32_t usdhc_clk_en_bits)
+{
+ unsigned int ccm_trgt_id = CCM_TRT_ID_USDHC1_CLK_ROOT + usdhc_id;
+ unsigned int ccm_ccgr_id = CCM_CCGR_ID_USBHDC1 + usdhc_id;
+
+ /* Check for error */
+ if (usdhc_id > MXC_MAX_USDHC_NUM)
+ return;
+
+ /* Set target register values */
+ imx_clock_target_set(ccm_trgt_id, usdhc_clk_en_bits);
+
+ /* Enable the clock gate */
+ imx_clock_gate_enable(ccm_ccgr_id, true);
+}